Bài tập lý thuyết thống kê

Cung nhu so binh qu&n tniu duoc dung de iroc luong so binh quan chung ry 15 iheo mot tieu iluic nao do cua mSu duoc dung de u6c luong cho phirong sai chung Sj lb.. 20, Trong cflng thurc

e i u H O I T R A c N G H l f e M

L l T H U Y f T

CHO CAC CAU SAU

1 fj$ n KTtS^figke gifip clip viec nghien ci'ru cSi chung vac6i ritog m6i c ^ h i ^ j ^ p (D)

v £ ruytt <tdi ■thdtf'idi£ni phan anii su rich luy ve lurong cua hifcn tuqmg tioivg sdSi thdi

3 So tuyet d6'i thfrl id p/a traRg cua hifcn luong nghien ctfii trong mfit ihcri difcin-

4 Piurcmg an binh plnrong cac chenh lfich gi&a cac gia tri If thuyet va cac gia trj tlurc le

5 Doi voi day so rhdi diem co khoang each thdi gian bang nhau ,mirc do binh qufin tlieo tlioi gian chfnh la muc d6 binh quan cua tirng nh6m tai mttc d£> (D)

6 Phirong phSp chi s6 la pp phan tfch moi liftn he chG phep nghien ctfu cai chung ya h6

7 Luang tang giam tuyet doi binh qu4n cuvet d&'i chi'nh la luong binh qu&n tang giam

S PE chi s6 la pp mang t/c t6ng hop khdng mang t/c ^han tich (S)

9 i!)ian to thO'ng ke chi nghien ciifu mflii quan he gLCfa mot tieu thirc nghuyen nh&n va

10 He so tirohg quan chi cho phdp tliay duoc cirimg dp cua moi lien he tuong quan

! 1 Toe do tang giam binh quan cua cac luong tang giam tuyet doi lien hoan (S;

11 Nghien ci'ru gia tri tuyet doi c ua luong tang (giam) cinnh la sir van dung ke't hap so

13 Chi so gia c;i cua indt nhom mat hang la chi tieu ura mang u'nh rOng hop vira mang

Nghien ci'ru chi s6' chung cho phep thiiy diroc bien dong cua tirng phan nr don vi ca

15 Cung nhu so binh qu&n tniu duoc dung de iroc luong so binh quan chung ry 15 iheo mot tieu iluic nao do cua mSu duoc dung de u6c luong cho phirong sai chung (Sj

lb Phan to co khoang cach to chi duoc ap dung trong trirong hop bie'n tieu there bien

17 TChi nghien ci'ru so' tuong do'i va sf> tuyet dfi'i chi cSn xet de'n d d cua doi tuong

i S S6 binh quto h\ mot trong cac pp duoc dung de nghien ciru cac qua trinh bieii di>ng

19 Chi so klidi lu'png san phim la chi tieu vira mang tinh tdua hop vtra mang tfnlv

Dai hoc Ngoai th ifa n g

20, Trong cflng thurc chi so lieu luong ve gid ca Khoi ltrcmg hang -ieu’fii

21, Sai sd binh quan chon m iu theo pp chon nhieu lan bao gia cung nh’6 hon hoS\

22, Khi nghien ciiu den s6 tuong ddi va tuyet ddi can xet den cac diem cua hien tuong

23, Nghien ciru he s6 tuong quan khOng chi cho phep thay dityc vai trd cua timg tieu

24, Khi nghien ciru thdng ke can van dung ket hop gia tri luyet ddi cua tang gjam lien

26, Khi ti'nh he so bie'n thien co h i dung mjiS thay cho sd binh quan (D)

27, PP binh quan nho nh£t 1A sir t<K thi<iu hoa binh phuong c i c ch6nh lech gifra cac gia

28, Phan t6 thdng ke vira nghifin cthi mdi qh giua cac tieu thurc nguyen nhan va tieu thuc ke't qua , vira nghien cuu mdi qh giQa nhieu tieu thiic nguyen nhan va mdt tieu

29, Du doan dira tren luong tang (giam )tuyet ddi binli quan chi duoc thuc hien vdi.day

so thdi gian cung tang (g ia m ) vdi m dtluong tuyet ddi g in nhu nhau (D)

30, PP dir doan dua tren nguyen tic tdc dd pt binh quan chi duoc thuc hien vdi day sd

31, Cung nhir binh quan m iu duoc dung de udc luong s6 binh quan chung ty le theo mot lieu thuc nao day cua mau duoc dung de’ u6c luong cho ty le ciia tap the chung

32, V 6i cac yeu cAu nhu nhau ve do tin cay va pham vi sai sd chon m iu Ne'u chin mau theo pp chon mOt lan se cAn ft dcm vi hon khi chon thed pp chon nhiiu liin (D,i

33, Phan td c6 khoang cAch t6 khdng chi duoc Ap dung trong trudng h<?p tuong bien

34, Nghy4n cuu bie'n ddng cua binh quan cho tha'y xu huppung pt cua hien tuong qua

JI) HAY Ll/A CHON eA U TRA I ,6 l DUNG CHO TUNG CAU HOI SAI! DAY:

can ira Ic/i dting duoc in nghieng

; iipitg ngkfin curu cua kfioa Hoc thdng ke la:

■ j. Mai luong thuantuy cua hifen tuong tir nhifin

!>l)i ’.irang trong mtfi lidn hft vdi mat chftt cua cdc hien tuong va qua trinh kinh te - xii Ijoi so Idn trong didu kien thdi gian va dia die’m cu the’:

c C hi nghien ant cac hien tuang sd lan

d CM nghien ctfti c a r hien ttfrng cd hier.

H e thong chi tieu phan dnh

a. C ac khia canh quan trong nha't cua tdng ihc’ chung

b C f c khi a canh quan trong nha't trong tdng th£

t Mot lien In’ cua id’ng the vdi c a c hien tinmg lien quan

,7 :J ia c dung

3 Khi nghien cuu bien dong ctia cac hien tuong phuc tuo can tien hanh phan to he

fitting kii vi:

a Phan to cho phcp thay duoc hien dong cua toan b6 hien tuong qua thdi gian

!:> Phan to chiiih la mot phuong phap nghien ciru lien hi.

: Phan 16 cho thay tain quan tiong cua timg bo phan trong tdng the.

h \.) c

<’ cd a h vd c.

4 Luang hdng thdng cua cac nhan vien trong mdt cdng ty dao dong til 160.000-

640 000 Sdlieu duac phan ihanh 10 to vdi khoang cac to bang nhau Hay chi ra:

a Cudi hon tren cua td lan nha't va gidi han dudi cua to nJio nhat: 640.000d, 160.000J b.Khoring ;.ach td 4S.000d

c Tri so giira ctia timg so: 184.000 2.<2.000 2HU.iHJ0 228.000, 376.000 424.0(H) -"2.00O 520.000, Sbk.MO 6 1(>.000.

•>' Trong cat: y sail day, y nan bie'u hien sd tuyet ddi:

a Quan he so sa.nh gifra gia ca cac mat hang gil'ra cac thj w d n g

I; Oirt ca cua cSc mat hang tai cac thj trtfdng khac nhau

c lo n g gia ca cua tat c ic a c m&t hang kJitlc nhat: tren 1 thi truftng

i Kliong diftu nao trong sd cac di6u tren la tiling

i' <\i h vd c.

(> S d cdng nhan trong hop dong ctta mot Cdng ty ky rao ngdv 1I2I199S la 300 cdng

i/hdn Do yeti cau cdng viec, ngdy 1/3 cd them 30 ngitiri mra duac ky hap ddng

Tong so cdng nhan trong 2 thdng cu cdng ty Id:

a 330 ngudi.

b 630 ligtrdi.

i Khon:> tinh duac

7 Trong cac sd lieu sau, sd lieu ndo 1a so tuong doi dd

a. G'w vdng thdng 3 tdng 10% so vat thdng 2

b tJid vdng lining 3 bang 110% so \cri thdng 2

:: 'ji.i vaag ihan.a ? 6 TP HCM bang lOO'fr so '6 i Ha No;

D ai hoc N goai th iro ’ng

;! Ci-A vSng thing 3 6 TFHCM cao hcni 10% so vdi HA NQi

6 Du&ng biiu diin md'i liin h i thuc tig iua titu th&c nguyin nhdn vd tieti thfc kit qua duoc goi Id:

a Dudng hdi quy \$ thuyfit

b Dtrdmg hdi quy thuc nghiem

c Dirimg luyfi'n tfnh

d Dirtmg phi tuytfn tfnh

9 Trong nhung y du&i ddy, y ndo Id tdc dung cua day sd' thdi gian :

a p/dnh bifi'n dQng cua hiftn tiring qua thdi gian

b Nfiu lfin dw?c xu th£ bi£n dijng cua hifin tilin g

c Tfir day s6 thdi gian cho ph6p dii dodn mtic d<> tuong lai cua hifin tuqmg

d Tdftca cdc y trin diu dung

10 Trong nhOng cdu sau ddy, cdu ndo ddng :

a S6 lugmg ddi Id chi s6'

b.Chi sd la sd'tuong d d i.

c Chi sO chi bi£u hidn quan he so sdnh giua 2 hi$n tirpng cd bifit

d Ttft ci cdc cdu trfin diu ddng

11 Ddc diem cua pp chi s6 liin hoa Id : khi c6 nhiiu nhdn t6 tham gia tinh todn chi sd':

a Chi c6 mQt nhdn to' cO' djnli cdc nhdn t6 cdn lai thay d o i

b chi cd m$t nhdn tdnghiin ci'ru lhay ddi, cdc nhdn td'cdn lai cd'dinh

c mOt s<5 nhdn ttf s6 du<?c c6 djnh mOt s<5 nhan t<5 c6n lai thay d o i.

* KhOng di£u ndo trfin la dung

12 U&c luong Id :

a Vific tfnh todn ddc tnmg cho tOng thfi m5u

b Viftc tfnh todn cdc tham sd ddc tnmg cho t6ng thi chung

c Tir cdc hi£u bifi't vfi cdc tham sO' ddc tnmg cho tOng th<5 chung suy ludn ra thdnh cdc tham s6 cho tOngthfi mdu

d Tv cdc hie’u bie't v<f cdc tham sdddc tnmg cho td’ng th i mJu suy ludn ra cdc tham so cho tdng th i chung

13 T hi ndo Id tdng th i thdng k i.

a Trutoig DH K TQ D

b Tip th£ cdc ban hs dang h<?c

c Id hifn tifpng KT-XH sd Ian gdm nhlbig don vi (hoac phdit til hifn tifcmg ) cd bid! cd§ duoc quan sat vd nghien ciht.

d KhOng didu trong s6 cdc diiu tren k dung

14 Thdi kiditu (raid:

a DO ddi thdi gian diin ra cuOc di£u tra

b DO dSi thdi gian nhdn vien difiu tra di thu thdp tdi lifiu

c D(! ddi thdi gian co sir tlcli lux re nidi htong cua hiin tuong ditu tra

4

d Ca a,b,c dfiu ditng.:

c ck b va c diii diing

15 Trong cdc $6 s q itja y sd'ndo Id s6’ tuong dSi khdng gian :

a Gid vang thing 3 h HN thdp hon 10% so v6i TPHCM.

b Gid v&ng thing 3 b HN thfitp hon 10% so v6i thing 2.

t Sd nam S lop cdc ban bdng 120% so vm sA iiit tirdiig cung lop

d KhOng c6 s6 ndo trong s6 tren Id tuong do'i khdng gian

16 D o tinh khd khdn cua cdng v ie c , (Un luong ngdy cia.m pt cty tdng thim 300% Sau kkhi cdng viec k it thuc ,m(tc tiin luong ngdy cua cty gidm 75% Anh (c h i) c6 kit ludn g i?

a Cdng nhdn trong cty duoc nhdn iniic lucmg ddu

b SO' lurong duoc nhdn luc cdng viec kh6 khan ft hon ipirc luong duoc nhdn ltic cftng vific kho khan ft hcfn

c $6luong duoc tang lfin luc cftng vific kh6 khdn ft hon mtfc luong duoc nhdn sau khi cOng vific kfit thuc

d Khdng difiu nao trfin ddv la dung

17 N hrnc H im cua so binh quan Id :

a Nfiu lfin miic do dai difin cua mOt tdng th£ thco mQt tieeu thtrc ndo d6

b Mang tinh ting hop vd kkhdi q u it cao

c Rat nhay cam vcri cdc hrang bien ddt xuat

d KhOng nhay cam vdi cdc luong bifi'n dot xua't

18 M6t cty duac thdnh Idp tic ndm 1987 Den ndm 1992 ,ba cty sat nhap vdo vdo mot cty Tong von huy ddng cua cty iri.<ng suot thdi gian dd nhu sau (da loai M lam

Khdng n(n tinh khoan g thdi gian dd

f9 Trong cdc cdu sau cdu ndo dung :

a Chi s6 chung la chi s6' tudung d6i

b Chi s6' cd thfi Id chi sO' tuong do'i

c Chi stf chung va chi s6' ca thfi dfiu Id chi s6 tuong d6'i

d KhOng c6 loai chi sO' nao la chi s6 tuong do'i

Cd a,b,c din diing

2d K h i diing pp ch i binh quan de tinh chi so phdt triin cho gid ca , quyin sd' ctia

ch i sd'dd Id

<i Mure tiiu thu hang hod ky nghiin cim

a Luong tifiu thu hdng hod kv nghifin ci'ru

c Miic tifiu thu h&ng hoi ky gd'c

d LirqJng hitng ho£ tieu thu ky gdc

21 Trong khi tifn hdnh dii'u tra chon mAu, nhitng loai sai sd" ndo dudi ddy cd thi xdyra

a Sai sO do ghi chep

b Sai sd' do tilth dabble it

c Sai stf chpn miu ngSu nhifin

22 Sai sd' do tlnh dai btfu Id:

a sai sd xiy ra khi thu thftp sd lidu

b Sai stf do khOng khSch quan khi chon c£c dcm vi vio miu

c.i Sai sd xiy ra do chi didu tra mdt sd ft don vj mi lai suy rQgn cho toin bQ tdng the’

23 Tdng thi ndo dudi ddy Id thdng thitiim dn.

a Tdng ih£ nhitng ngudi say mi nhac beatle.

b Tdng thd nhung sinh viftn dang hpc tai trudng DH KTQD

c Tap thd thfiy c6 giio giing day tai trurdng DH KTQD

d Tdng the do&n vifin cua 16p cfic ban

24 Xdc dinh thdi diem diiu tra

a Dd c&c nhfln vifin didu tra di ddn cic hQ gia dinh thu thftp thdng tin vao thdi didm dd.

b Dd ghi chdp mdt luong Cua hien tirgng v&o thdi didm dd

c Vi hien tuong ludn ludn bie'n ddng nCn phai cd djnh mat luong cua hien tiring tai q thin didm dd tiftn viec thu thap tki lieu

Hai cOng thuc lr$n dua kai cung mdt ke't qua vi:

a cung dilng dd tlnh s6 binh quan

b Quydn s<5 trong (1) bidu hien baaawngf sd tuyet ddi (2) bidu hien bang sd tuong ddi

do vay tthuc chat hai cdng thuc 1& mQt

c hai cdng thdrc nay thirc chat U mdt

d Quydn sd trong (1) bidu hien bang sd tuong ddi (2) bidu hien bang sd tuyet ddi, do vay thuc chat 2 cdng thurc la mdt

3, y (h i diem cua trungvi:.

a. San birig mpi chftfth ldch gifta c4 c tuong bitfn

b Bi«’u hifin tntfc dd chd bifi'n nha't cua hifin tmjmg

c Nhay cam vdi su bifi'n thifin cua tifiu thuc

A Loai trir &nh hirdng cua nhflng luong bi<?n d6t suit

28) Trong cdc cdu sau ,cdu ndo khdng diing.

a Sd tuyfit ddi p/a qui m 6, khdi luong cua hifin nrrmg lai nhflng thdi di6m nha't dinh

b So tuyfit ddi p/a qui m 6 khdi luong cua hifin tuong trong mflt dd d ii thdi gian nha'tdinh

c Sd tuyfit ddi cho phfip di sau phan tich dSc difim ban chat cua hifin tuong

d Ca a v& d

29) Khi xac dinh m trong mot tdp hap sd'lieu , cdng viec Mu tien tien hdnh Id :

a xac dinh s6 dung owr vi chi chi'nh g iuairong tap hop sd lieu d6

b sac dinh xem s6 luong don vj trong d iy ia c h in hay le

t? sip xep day sd theo thii tir tang d in hoSc giam d Sri

d xac dinh xem tinh M theo cdng thtrc don gian hay cOng thuc cho day sd phan td

30 Trong nhtrng chi tiiu du6i day ,chi tiiuu nao Id chi tiiu tdng gidm tuyit d d i.

a Nam 1994 v6n hru ddng cu a cdng ty bSng 150% so vdi nam 1992

b Nam 1994 vdn luu ddng cua cty bfing 50% so vdi n&m 1992

: Binh quan mdi nam vdn kru ddng cua cty tang 2 4 %

il Nam 1994 vdn luru ddng tg 2 0 0 trifiu so vdi n&m 1992

il Tit thdng 2 ndm 1995 do nhu cdu cua cdng viic , cty ki them hap ddng v&i mdt tii cdng nhdn Tdng $6' cdng nhdn ducrc ki hop dSng tdng thim 30% so vdi truftc khi cdng nhdn gdp khd khan Anh (ch i) c6 ket ludn gi?

a Sd cdng nhan c 6 viec lam trong cty bay gic< ddng bang sd ngudi trong hop ddng trirdc thang 2 /1 9 9 5

b„S£> cfing nhan trong cty bay gid nhifiu hem so vdi sd cdng nhan trudc 2 /1 9 9 5

* Chua the’ kfit lufln duoc vi thifi'u sd lucmg

32) Tai sao khi dung pp chi sd' binh qudn de tinh chi sd phdt sinh chd khdi lucmg hang hod tiiu thu , ngudi ta diing chi sd'binh qudn cdng gia quyin md khdng dung chi sd binh qudn dttu hod , vi chi sd’ binh qudn dieu hod khdng cho mdt dip s6‘ diing vi chi sd' binh qudn cdng gia quy in thudn tiin hon cho trudmg hop ndy.

a Vi quyfin sir dung kkJdii tfnh chi sd nSy 1& mdt sd lieu thuc tfi' dd vSy thuan tifin hon v<? mat sd lifiu

: b Vi quyfin sd sir dung khi tfnh chi sd n iy Ik mdt sd lifiu gia djnh

33) Trong cdc gidi phdp dudi day , gidi pha ndo cd tdc dung Idm gidm sai sd' chon mdu ngau nhien ,

a Tang sd don vi theo mftu ,

b Giam phucrng sai cua tdng the chung

c Sir dung pp tao man thfch hop ddi vdi tirng hifin tuong nhhifin cdu

7

a Trong cOng thiic 1 quyin sd lft a,,, po.

b trong cdng thtic 2 quyin sd lft dn

35 Trong cdc cdng th&c sau , y ndo khdng ndm trong cdc tdc dung cia nhdn td' thdng ke

a phftn td thdng ke giup cho viftc nghien ctiu cii chung vft cix rifing m<>t cftch kS't hop

b phftn t6 thdng ke lft pp quan trpng didu tra vft phftn tfch thdng ke

c phftn t6 thdng ke pghien ctiu bin' chtft cia hien tiling KT-XH

d Phftn to thdng k4* lift cd sd vftn dung cftc pp sd binh quftn hdi qui tuong quan

e khdng cd y nao

36) y nghia cua h i sd hdi qui

a P/a Anh hudng cia cftc tieu thiic nguyen nhftn khftc d£n cftc tieu thtic k£t qui

-b P/a Anh hudng cua tieu thtic nguyen nhftn dang nghien ctiu d£n tieu thiic keft qu a

c P/a dd ddc cua duftng hdi qui ly thuyft

d CA b vft c ddu dung

37) Cd cdng thdec tlnh sd'binh qudn diiu hod nhuq sau :

X = I d ,/X ,Trong cdng thtic nfty d, la :

a, Sd tuyet ddi

b, T6ng luting bi€n tieu thtic

c, bidu hien k<St cft'u cua lixqrng bidn tieu thtic

d, (thdng cd diiu nfto a tr£n 1ft ddng

38) Sd binh qudn cQng duqc ddng di7 tinh:

a, sd binh quftn cua nhOng lupng biln eft thd cd quan he tdng

b, sd binh quftn tit dfty sd phftn phdi

c, Sd binh quftn cua cac sd binh quftn t o

* C i a b, c.

39) Sd binh qudn duoc dung d i tinh :

a, Sd binh quftn cua nhtfng lupng bidn cd quan he toong

b, Sd binh quftn cua c ic sd binh quftn td

c, Khdng didu nfto 6 tren 1ft dung

40) Khi tinh chi sd gid cd giira 2 thi truing A vdBta sii dung quyin sd Id :

a khdi lifqmg hftng hod tieu thu a thi trudng A.

b, Hang hoi tieu thu 6 thj tririmg B.

8

a„ G ii c i cua tflmg mat hing A v i B.

b, Gia ca c6 dinh cua tirng mat hkng do nhi nude qui dinh

Gid c i binh quin cua tflmg mat hing trfen 2thi trudng

d< Ca b v i c

42) Nhucrc diim cua M 1 Id :

a, San bling bu trur chftnh lech gidra c ic tuong biin

b, Chiu inh hudng cua luqng bi£n d6t xutft

c\.K£m nhay h£n vdi sttbiffn thitn c&a-ttfliHhtirc

d, Chi tinh vdi tdng thi ft don v j

43) Chi sd'cdu (hdnh c6 dinh pla:

a, Bie'n ddng cua bin than tieu thile dang nghien ctiu

b, Bie'n d6ng cua tdng luong bidSn tieu thtfc

c, Bie'n ddng cua k it cfi'u tdng the theo tieu thuc dang nghien cltu

d, Bie'n ddng cua tat ck cAc tieu thuc tren

e, Ca a vi c.

44) Chi so anh hudng kit cdu pi a

a, Bie'n d6ng cua ban than tieu thirc dang nghien cih i

b, Bie'n ddng cua tdng lu<?ng bie'n tieu thirc

c, Bidfn dOng cua kit ca'u tdng th£ theo tieu thirc dang nghien ctfu

d, Bie'n dOng cua ta't ca cic nhan td trin.

e, Ca a vh c.

45) Chi tiiu thing k i pla

a, Dac die’m cua tung dcm vi tdng the

b Dac di^m cua toin don vi tdng th£

c, mat luong gan vdi mat chat cua liien tuowngj KT-XH.sd ldn trong di£u kien thdi ,gian v i dia die’m cu the’

d C i a, b, v i c

46) Ndi dung diiu tra Id

a, Tdng hop c&c chi tieu , cdn thu thftp tai lieu tren cic don vi didu tra

c, c ic khfa canh cdn thu thap tai lieu cua tdng the chung

;l: Ca a, b, vi c

47) Qua diiu tra chi tiiu 2000 hd gia dinh , ngudi ta thu duffc M1

~t.000.000d/thdng, sd'liiu tren cd y nghJa gi?

V B in h quan mdi hi> chi tieu l.OOO.OOOd/thing

b, Da sd cic h<J gia dinh chi tieu lOOO.OOOd/thdng

9

c, 50% hQ gia dinh' c6 mure chi tieu lOOO.OOOd/thdng trd len v i 50% hQ.'gi&’dlnh c6 mite chi tifiu l.QOO.OOO.dAhing trd xudng.

d, Chua thi ket luin

48) Sau khi xdc dinh chuamg trinh hdi q u i, chi tiiu p/a cu&ng dQ cua m il liin h i :

a, He sd tirefng quan

b, Ty sd tuong quan.

c, He s6 hdi q u i.

d, Ca a v i b d€u dung

49\ Td'c dd tdng (gidm) binh qudn Id :

a, Ty s6 giOa lupng tang (gilm) djnh gdc vdi mite d«J binh qufln.

b Ty sd giOa luong tang (giim) dinh gdc vdi mite do ky gdc cd dinh

p, L i chi tieu tuong ddi ndi len nhOng didu tang (giim) dai difin trong m$t thdi ky nhat dinh

50) Trong cdc cdu dudi ddy, Cdu ndo Id lac dung cua pp chi sd.

a, Bi6u hien bie'n ddng cua hien tuong kt-xh theo thdi gian

b, Biiu hien bi£n ddng cua hien tuong kt-xh qua c4c dja diem khde nhau

c, Phfin tfch mdi lien he gifla cdc hien tuong

d, Caav&b

e, Ca a, b, c

51) Khi tiin hdnh chon mdu , Sd'don vi duoc chon ra dedieutra phu thudc vao cdc y£u td ndo trong cdc y i‘u td dudi ddy.

a, Dd tin cdy cua udc luong ■

b, DO ddng diu cua tdng the chung

c, PP chpn mSu ,

d; Tat ca cdc ye'u td tren

52) Khi xdy dung chi sd liin hop cho khdi luong hdng hod tiiu thu , quyin sd duoc chon Id gid cd dcm vi hdng hod vi:

a, G ii ca biiu hien ty trong mite tieu thu cua cua timg mat hang trong tdng mite tieu thu

b, Ggiup cho cdc quyin sd tdng thi bao gdm cdc phan ttr khdng cdng duoc vdi nhau bAng tdng thi cdc phin tir cdng duoc vdi nhau

c, Gia ca hing hoi khac nhau cd inh hudng d£'n bien ddng cua luqnig hang hod tieu thu

d ^C i a, b, c

e, C a b v a c

53) Sau khi phdn td la cd :

a, C ic don vj trong cCing mdt td cd t/c gidng nhau

b, Cdc don vi trong ciing mdt td cd t/c khac nhau theo ti6u thurc phan td

d, Cdc don vj trong td cd t/c gidng nhau hole gSn gidng nhau theo tieu thiic phan td

, £ Qa a v i c

10

■,) l ap thithhdng k i

a, Tap hop cic hifin tirong kt-xh

b, Tap hop cSc don vj hoac phan tur c& bifit.

c, Tap hop cic don vi hoSc hifin tirong ci bifit can duoc quan sat va phan rich mat

luong

* Ca b, va c

Tra lai cau hoi thuyfi't:

C H IT O N G I

Cdu l.Dd'i tuong cua ly thuyi't thd'ng k i Id:

a, M6i trucmg cua hifin tuong tu nhifin

b, Moi truing trong mdi lifin hfi vdi mat chat cua cic hifin tu<?ng KT-XH s6 ldn trong

dk ihai gian vi dia diim cu thi

c, Chi nghifin ciru cic hifin tuong s£> ldn

d, Chii nghifin ciru cic hifin tucmg cd bifit.

Cdu 2) T hi ndo Id tdng th i thing ki

a, Trucmg DHKTQD

h Tap thi ldp c&c ban dang hoc

c, L i hifin tuong KT-XH s6 ldn g6m nhung don vj cd bifit can dtrcfc quan sdt v i nghifincun theo mpptj hoac m6t s6 tifiu thtfc nio dd

Cdu 3, Tdng thidu&i ddy Id tdng the tiim an (SGK) trang 6.

a, long thfrnhung ngudi say mfi am nhac Beatle b,

b, TOng thi nhftng sinh vifin dang hoc trong trudng KTQD

c, Toan bf» thdy cO giao day trudng KTQD

d, Ting the dokn vifin cua ldp cac ban

Cdu 4) Phan bieetj ttdng th i dang chit vd khdng ddng c h it.

a, Tifiu thirc tifiu thirc cua cac dcm vj ting thi

b, Mat luong cua hifin tirqmg dang nghifin cuu

c, Muc dtch cua vific nghifin curu su gidng nhau hay khdc nhau cua don vi ting thi theo tifiu thtic nghifin ciru

Cdu 5) a, Ddc diim cua den vi tdng th i

b dac difi’m cua to&n thi ting thi

Dac difim cua m6i nh6m duoc trong ling thi

c, muc dich nghifin ciru cua thO'ng kfi

Cdu 6) Cdc dubdo thd’ng k i Id biiu hien cua :

a, tifiu thirc thdi gian

b, tifiu thiic khftng gian

c, Cic biiu hifin gian tifip qua tifiu thdrc cu thi

cl cac biiu hifin iruc tifi'p cua tifiu thuc thing kfi

Cdu ?) Chi tieu thong ke phan anh luong :

11

a, Dae di&n cua tCmg dcm vj t6ng th e

D ie diim cua tokn b<> cic don v| tdng the

c, mat lupng gin vdi mat chit cua hifn tu<^ig KT-XH s<5 ldn trong dk thdi’gian v i dj<r didm cu th^

* ca a v i b

C H U O N G n :

Cdu 8) H i thdng cdc chi tiiu p/a.

a, Cdc khfa canh quan trpng nhfl't cua tdng the chung

1}, Mdi lien he cua tdng thd vdi tit c i c ic hiftn tucpig lien quan

c, Cac khfa cang quan trpng nhit cua don vj tdng t h i

* a a v i b

Cdu 9) Thdi ki dUu tra Id (dd ddi thdi gian cdn d i thu thdp tdi U fu.)

a, D<) dii thdi gian diin ra cuQc didu tra

b, Dd dii thdi gian nhan vien didu tra di thu thip tii lieu

c, Dd dii thdi gian cd su t(ch lup vd lifting cua hien ttft^ig dang didu tra

C i b v i c

Cdu 10) X&c dinh thdi diim dUu tra Id :(thditi diim 1dm md'c d i ghi chip tdi tiiu chung phdiphU hap vdi tdng hiin tuong.)

a, Nhin vi6n didu di de'n c ic hd gia dinh thu thip thdng tin vio thdi didm dd

b Dd ghi chdp mat luong cua hien tuqmg vio thdi didm dd

c, Vi hien tuong ludn bie'n ddng ndn phai cd dinh mat luipng clia hien tuc^ng tai mdt thdi didm dd tien viec thu thflp tii lieu

• C ab v ie

Cdu 11) Ndi dung diiu tra Id :

a, T<?p c ic chi tieu cin thu thip tii lieu

b, Tip h<#> c ic die didm cin thu thip tii lieu tren c ic don vj didu tra

5»C ic khfa canh cin thu thip tii lieu cua t6ng thd chung

*Ti't ca c ic ^ kie'n tren

Cdu 12) Phdn t(ch thdng ke Id a^ Dua vdo mure id cua hiin tupng trong qud khti niu lin duac bdn chd't cu th i va tlnh qui ludt cua hiin tucmg.

b, Xir ly tii lieu thu hip dupe trong didu tra thdng kd

c, Tip trung v i he thdng hoi tii lieu thu dupe qua didu tra thdng ke

*Khdng cd y kidn nio tren l i dung

C H l/O N G i n

Cdu 13) Nhiim vu cua phdn tS thdng k i la

a, Phin chia loai hinh KT-XH va kdt ci'u cua hien urong nghien cih i

b, Nghien cihi kdt ci'u tdng thd vi mdi lien he giCra cic tieu thiic

6 Phin chia loai hinh kinh te' xa hdi vi bidu hien mdi quan he gitfa cic tieu thurc kd't ctfu tdng thd

d, C i a vi b, c ddu khdng dung

12

Cdu 14: Sau khi phdn pd (a cd

a C&c dan vj trong mOt t6 cd tfnh ch it gi<5ng nhau

(j, C£c •dcm vj trong mdt t6 c6 tfnh chat kh£c nhau trtnt tifiu thirc phan td

* c C ic don vi trong mdt td chuc cd tfnh chit gidng nhau theo tifiu thuc phan t6

d Ca a v i c

Cdu 15 Sau khi phdn td thd'ng ki.

a Cac dcm vi ci bifit c6 dac diim gio'ng nhau diia trfcn tiftu thtirc phan t6 ducfc dua v&o 1

t6

b C ic don vj c6 dac diim khic nhau dua trfin tiftu thiic phan 16 dtroc dira vk> cdc t6

khic nhau

c GiQa cac t6 c6 tfnh chat khic nhau theo tieu thifc phan td

* d C i 3 cau trtn dfiu diing

Cdu 16 Trong cdc y sau, y nao khdng ndm trong tdc dung phdn td thdng ki.

a Giup cho nghien citu c£i chung v i c4i rifing mOt cfich kfit hop

b L i phirong phip qUan trong trong diiu tra v& pjiftn tfch thd'ng kfi

c Nghifin curu bin chit cua hifin ttrcmg kinh 16 xS hdi.

d La co sc( van dung c ic phirong phip sd binh quan, h6 i quy tuorig quan

c Tri sd giira tirng td

Cau 18: Trong cac cau sau, cau nk> l i tie dung cua phan td thd'ng kfi

a Chia tdng thi khdng ddng nha't cua tdng thi ddng chSt theo tifiu thiic nghifin curu

b Nghifin ciru ban chat cua hifin turong

c Nghifin curu c ic dac trung cua toin bQ hifin tiling nghifin ciru

*d Ca a, b, c

Cdu 19: Phdn td thd'ng ke Id phumg phdp:

a Phan tfch mdi lifin hfi giOa cAc hifin tuong kinh tfi' - xa hdi

b Nghifin cuu c ii chung va cai rifing mdt cich kfi't hop

c Nghifin ciru kfi't ca'u tdng the

* d Ca a, b, c

Cdu 20: K it cdu tdng th i cho ta thdy.

a Biiu hifin tSm quan trong cua tirng b(> phan trong tdSng thi

b Biiu hifin ty trong cua timg bd phan trong tdng thi

c Biiu hifin tSm quan trong cua toin bd tdng thi trong nghifin ciru thd'ng kfi

* d Ca a v i b diu diing

e Ca a, b v i c diu ddng.

Cdu 21: Trong cdc cdu sau ddy chi tiiu Id:

13

a Quan he so sinh gitta gii ck cic mfit hing gitta cic thj trudng.

b G ii c i gitta c ic mit hing tai cic thj trudng khic nhau

c Tdng gii tri cua tit c i c ic mit hing khicnhautrtn mdt thi trudng

d khdng diiu nio trong c ic sO tr tn li ddng.

* e b v ic

Cdu 22: Sd'cdng nhdn trong hap ddng cua mdt cdng ty ky v$o ngdy 01/02/1995 kd

300 cdng nhdn Do ytu cdu cdng vitc ngdy 01.3 cd thim 30 ngudi nSa duerc ky hap ddng Ting sd cdng nhdn trong 2 thdng cua Cdng ty Id:

a 330 ngudi

b 630 ngudi

* c Khdng t(nh dupe

Cdu 23: Trong cdc sd litu sau, s6 tiiu ndo Id tuong ddi ddng thdi

a Gii ving thing 3 ting 10% so vdi thing 2

* b G ii ving thing 3 ting 110% so vdi thing 2

c G ii ving thing 3 thinh phd Hd Chf Minh bang 100% so vdi H i NQi

d G ii ving thing 3 d Thinh phd Htf CM Minh cao hon 10% so vdi H i Ndi

Cdu 24: Trong cdc sd sau ddy sd ndo Id tuong ddi khdng gian.

a G ii ving thing 3 d H i N$i thip hon 10% so vdi thinh phd Hd Chf Minh

b G ii ving thing 3 thip hon 10% so vdi thing 2

* c sd nam d ldp c ic ban bing 120% so vdi sd ntt trong cDng Idp

d Khdng cd sd nip trong c ic sd trftn l i sd tuong ddi khdng gian

Cdu 25 Do tinh chat khd khdn d a cdng viic, tiin luong ngdy cdng cua cdng nhdn trong mdt Cdng ty tdng 300% Sau khi cdng viic kit thtic, tien luong ngdy cua cdng nhdn gidm 75% San cd kit ludn gi.

*a Cdng nhin trong COng ty dupe nhin mtfc luong ban diu

b Sd lupng dupe ting 16n do cdng vite khd khin ft hon muc luong giim xudng khi cdng viftc kd't thuc

c Sd lirong dupe ting ten do c6ng vjec khd khin nhidu hon mure luong giarri xudng khi c6ng viCc ke't thuc

d Khdng didu nio ddng ci

Cdu 26: Nhuoc diim cua sd binh qudn Id:

a Niu lftn mire dd dai difin cua tdng thi theo md thiic nio d6

b Mang t(nh tdng hpp v i khii quit cao

* c R it nhay cim vdi c ic lupng bie'n dot xui't

d Khdng nhay cam vdi cdc lir<?ng bifin di)t xuat

Cdu 27: Cdc ban da cd 2 cdng thfrc tinh sd tinh gia quyen nhu sau

Ex,F,

x = j-p 0 ) x = Zx,F, (2)

Hai cdng thtic niy dua ra cung mdt ket qua

14

a Cung dd tfnh sd blnh quftn

■ b Quy£(i sdtrong (1) biifu hifin bfing sd tuyfit ddi (2) bi£u hifin sd tuong ddi' Do vfiy thirc'cha't 1£ mOt

c Sai, hai cOrig thdrc nfty khfing cdng kfit qui

d Quy£n sd trong (1) bi£u hifin bing sd tuong ddi, trong (2) bifi'u hifin bang s6 tuyfit

ddi, trong (2) biiu hifin bing sd tuyet ddi do vfty thuc cha't lk rruM

Cdu 28: Cd cdng thirc tinh sS binh qudn dltu hoi nhusau:

x _ ~ i &

X " Id /x.Jd ,trong cOng thuc n&y d,

a 1.4 sd tuyfit ddi

b La tdng luong bifi'n tifiu thuc

* c Bife’u hifin kfi't ca'u cua tdgn luong bifi'n tifiu thirc theo tifiu thurc nghifin ciru,

d KhOng c6 difiu n&o 6 trfin li dung

Cdu 29: Sd binh qudn cdng duoc dun de tinh

a Sd binh quin cua nhung luong bifi'n cd quan hfi tdng

b Sd binh qudn tCr day sd phan phdi

c Sd binh quftn cua cdc sd binh quan td

d Tat ca c ic difiu tren Id ddng

Cdu 30: So binh qudn cua nhBmg luong btfn cd quan he td'ng.

a Sd binh qufln cua nhftng luong bifin cd quan hfi tdng

b Sd binh quan tiir day s6 phan phdi

* c Sd binh quan cua cac sd binh quan td

d KhOng di£u ndo b trfin 14 ddng.

Cdu 31: Nhuoc dtfm cua Me la:

a Sau bang, bii trir chfinh lfich gitta cdc lUQtng bifin

b Chju anh hucmg cua cdc luong bifin dQt xua't

* c kem nhay bfin vdi su bifin thifin cua tifiu thirc

d Chi tinh vdi tdng the it dcrn vi

Cdu 32: Qua dieu tra chi tieu tai mdt khu ph6 cd 200 ho gia dinh Ngudi ta thu duoc Me = 1 trieu ddng/ thdng Sd tien tren cd y nghia gi?

a Binh qudn mdi hO chi tifiu 1 trifiu ddng/thdng

b Da sd cac h6 gia dinh chi tifiu 1 trifiu ddng cho mdi thdng

* c 50% hd gia dinh chi tifiu trfin 1 trifiu dOng / thdng trb lfin v i 50% hfi gia dinh cd mire chi tifiu 1 trifiu ddng/thdng trd xudng

d Chua thfi’ kfi't luan du<?c gi

Cdu 33: Uu diim cua trung vi

a San bang cua luong bifin

b Bifi’u hifin mire do phd bifin nha't cua hifin tuqmg

c Nhay cam vdi sir bifi'n thifin cua tifiu thuc nghifin ciru

15

* i Loai trit frih hiring cua hhBng luong biffn dQt xua't.

Cdu 34: Trong cdc cdu sau, cdu ndo khdng ddng vi' s6 tuyit ddi.

a Sd tuyet ddi phin M i quy mb khdi lining cua hien tutjng tai nhflng thdi di£m nha't'

dinh

b Sd tuyet ddi phin 4nh quy mOi kh6i lu<?ng cua hien tuqmg trong mQt dd dii thdi gian nha't djnh

* c Sd tuyet ddi cho ph£p di sau phan tfch bin chat, dac didm cua hien tuqmg

d Tat ca nhflng didu tren dSu diing v i sd tuyet ddi

Cdu 35 Khi xdc dinh Me trong tdp hap sti lifu, kiin cdn liin hdnh Id:

a X4c djnh sd ddng dr vj tri chfnh gitta trong tap h<flp sd lieu dd

b Xdc dinh xem sd luting don vi trong day sd 1& chin hay le

c Xac djnh xem tinh Me theo c6ng thtic don gisin hay cOng thuc cho day sd phan t6

* d Sap xdp day sd theo thu tu tang din hoac giim din

Cau 36: Me chfnh ia lu^ng bi£n

a 6 vj tri chfnh gitta trong mQt day sd bit ky

*b Cua duqfc 6 vj tri chfnh gitta cua day sd luqmg bie'n

c C6 sd ldn lap nhieu nha't trong day sd

d KhOng c6 didu n&o d tren 1& dung

e C i a v i b ddu dung

Cdu 37: Chiiu cao trung binh cua thanh niin Viit Nam Id 168, dd lich chudn Id 10cm trong khi khdi luong binh qudn Id 57kg dd Itch chudn Id 5kg anh chi cd kit ludn gi?

a Bi^n thien cua nam vd chidu cao vi can n$ng nhu nhau

* b bi^n thien vd chidu cao nhidu hon vd can nang

c Bidn ddng vd chidu cao cua nam ft hon bidn dOng vd can ndng

d Chua kdt luftn duoc

Cdu 38 Trong nhung chi tiiu do dd biin thiin dudi ddy, chi tiiu ndo cho phip so sdnh su bii'n thien cua nhiing hien tuong khde nhau.

a Khoing bie'n thien

a Co the’ ddng sd binh qudn thu dir<?c qua didu tra d6.

* b Khdng nen diing sd binh quan d6.

c Chua kdt luftn du<?c

d Ca b va c ddu diing

Cdu 40: Trong cdc cdu sau cdu ndo ddng.

a Sd binh quan phdn Snh mure d6 dai didn cho tdng the' nghien cuu

16

B o o k b o o m i n g

b So b'mh quan li inut do <lai didn theo mOt tidu thiic nio do cua c ic don vi trong tOng

the’ gOm.nhi&i don vj cung loai

c 56 binh quin mang tfnh ch it tdng hop va lchii quit.

d T it ca cac didu trdn d£u ddng

*e b v i c

Cdu 41: Chon cdu trd Idi dung trong cdc cdu sau

a S6 binh quin bidu hidn mile do ph6 bien nha't cua t6ng the theo mot tieu ihitc niodo

b SO' binh quin phan anh mire dO dai dien cua tdng the

c Cii a va b dfiu diing

*d Ca a va b ddu sai

Can 42: Chi nen tinh sd'binh qudn trong td’ng the ddng chd't vi:

a Trong tdng the’ ddng chit khong c6n su khic bifet vi

b Cac don vj trong tdng thd ddng chat gidng nhau vd loai hinh trdn tidu tlu'rc nghidncihi

* c Mat luong cua cac don vi trong tdng thd d6ng chit gidng nhau

d Ca a, b vi c

Cdu 43 Can van dung ket hap siibinh qudn chung v«i so hinh qudn to vi

a Cho phep nghien curu cai chung va cai rieng mot cach ket hop

*b So binh quan chung phan anh mure dd dai didn cho toan bO tdng thd, blnhquan

16 phan inh nuic do dai didn cho timg bO phan trong t6ng thdi do vay cung phii nghidncuu

c Nghidn curu sO' binh quin td cho phep thiy duoc die trimg ciia tirng td v i cua toin bO tdng thd

*d a vi b

c a, b va c

Cdu 44: Tdc dung cua sd'tuyet doi la:

* a Phan inh tinh hinh thuc td'cua hidn tuong nghidn cuu.

b Di sau nghidn ciru thuc trang cua hidn tutyrig nghidn curu

c Bi£u hidn suphit tridn cua hidn tuong qua thcri gian

d a va b

c ca a, b, c

Cdu 45: Me la mire dd (Mo?)

a Nam o vi trf cao nha't cua ducmg cong tin sO' tfch luy

b La mire do trung tam cua tdng thd theo mOt tiiu thuc nio

*c L i mure do phd bid'n nhat cua tdng thd theo tiiu thi'rc nio do

d Ca a, b, c

Cau 46: Nghien ciru cdc chi tieu do dd bien thii'n cho thd'y duoc,

a Do phan tin cua luong bid'n v6 i sO' binh quin cua chung

b Do dong ddu ciia tdng the* theo tiiu thi'rc nghidn cihi

c Dac diem phan phdi cua tdng the theo tifiu thirc nghien cuai.

*d CA a, b ‘c dfiu dung

Cdu 47: \ftld:

a Mtic dp ph6 bie'n nha't cua tdng the theo nipt tieu thilc nghien cihi nAo d6

b Mire dd trong t&m cua tdng th£ theo mpt tieu thi'rc nao dd

c Lucmg bie'n cua don vi d vj trf chfnh gitta trong tap hop sd lieu day s6 ltrpng bie'n.

a Dudng h6i quy If thuyfit

* b Du&ng hPi quy thuc nghifim

c Dudng h6i quy tuyfi'n tfnh

d Dudng phi tuyfi'n tfnh

Cdu 49: Sau khi xdc dinh duoc ptiuong trinh hdi quy chi tiiu ndo phdn anh cu&ng d6 cua mdi quan hi.

a He s6 tuong quan

b Ty sd tuong quan

c H6 sP' tuong quan

*d CA a vA b dfiu dung

Cdu 50: Ty sdiuong quan duoc xdc dinh dua trin.

a Ty s6 giua phuong sai chung vA phirong sai phan anh dp bien thien cua tieu thirc ke't

qua do anh hudng cua tieu thirc nguyen nhAn

b Ty sd gitta phuong sai ph&n Anh dp bie'n thien cua tieu thirc kfi’t qua do anh hudng cua tif u thirc khic ngoAi tieu thirc nguyen nhan dang nghien ciru vi phuong sai do Anh hudng cua tieu thirc nguyen nghan dang nghien ciru

c Ty sd gitta phirong sai do anh hudng cua cac tieu thirc nguyen nhan ngoai tieu thuc nguyen nhan dang nghien cihi vA phucmg sai chung

*d Ty sd gitta phuong sai do anh hudng cua tifiu thirc nguyfin nhan dang nghifin ciru

vi phirong sai chung

Cdu 51 y nghia cua he sd hdi quy

a Phan anh anh hirdng cua cac tifiu thirc nguyfin nhan khac dfin tifiu thuc kfi't qua

b Phan Anh Anh hudng cua tieu thuc nguyen nhan dang nghien cthi dfi'n tifiu thirc kfi't

qua.

c Phan Anh dp ddc cua dirdng hdi qiiy ly thuyfi't

*d CA b vA c dfiu dung

Cdu 52: Trong nhirng cdu du&i ddy, cdu ndo Id tdc dung cua day so thdi gian.

a PhAn anh bifi'n dpng cua hifin tirpng qua thdi gian

b ncn lfin xu the bifi'n dpng cua hifin tupng

18

c Dir doSn mufc dd.tutmg laicua hiftn tiling

*d TSit ak c&c cSu trin.

Cdu 53 Mdt Cdng ty duac thinh l$p tic ndm 1987, ba cdng ty khdc sdt rihdp vio cdng ty, tdng v6n luu ddng cua cdng ty trong sud't thdi gian dd nhu sau (dd bd lam phdt).

Ndm 87 88 89 \ 90 91 92 93 94 Von luu ddng 200 220 300 370 400 1200 1250 1400

Vd'n luu ddng cua cOng ty trong 9 nSm qua li

a 400 triiu ddng

b

*c Khdng nin tlnh cho sud't khoang thdi gian d6

Cdu 54: Trong nhung chi tiiu sau ddy, chi tiiu ndo phdn anh luong tdng (giam) tuyit ddi

a Nam 1994, vd'n luu d$ng cua cdng ty blng 150% so vdi nim 1992

b Nam 1994, vd'n luu ddng ciia cdng ty tang 50% so vdi nam 1992

*c Binh quin mdi nSm v6'n luu ddng ciia cdng ty ting 24%

d Nam 1992 vdn luu ddng cua c6ng ty ting 200 triftu so vdi nSrn 1992

Cdu 55: Tit thdng 2/1995, do nhu cdu cdng viic, cdng ty ky hap ddng thim vdi mdt

sd cdng nhdn Ting sd cdng nhdn duac Ifcjf hop ddng tdng thim 30% so vdi sd' cdng nhdn khi ky Cud'i ndm do khd khan v i tdi chinh, cd mdt sd' cdng nhdn phdi tqm nghi viic So cdng nhdn bay gid giam 30% so vdi trudc khi cdng ty gdp khd khin anh chi cd ket ludn gi?

a Sd' cdng nhan co viic lam trong cdng ty bay gid diing bang sd ngudi trong hop ddng trudc.2/1995

b Sd' c6ng nhftn trong c6ng ty bay gift nhiiu hon sd' cdng nhan trudc 2/1995

*c Sd' cdng nhan trong cdng ty bay gift ft hon sd cdng nhSn trudc 2/1995

d.‘ Chua the' ki't luan duoc gi vi thii'u sd' liiu

Cdu 56: Tdc dd tdng (giam) binh qudn Id:

a ty sd' gitfa luong tang (giam) dinh gd'c vdi mire dd ky g6c cd' dinh.

b Ty sd' gifla luong tang (giam) tuyit ddi binh quan vdi mite dd binh quan

*c L i chi tiiu tuong ddi noi ldn nhjp diiu tang (giam) dai difin trong mdt thdi ky nha't dinh

d ca a v& c diu ddng

Cdu 57: T6c dd phdt trien id

a Sd' tuong ddi ddng thSi

b Phan dnh xu hudng cua hiin tuong qua thu&i gian

c La chi tieu tuong ddi ndi len nhip dd tang giim cua hiin tucmg qua mdt thdi ky nhi:dinh

*d Ca a v& b diu dung

Cdu 58: doanh thu cua mot ciia hdng tit 89 -95 nhu sau;

19

1 NL.i 89- 90 91 • 92 ■ 9 4 ' , 95

- 1■ 310 •-T6c d(J phit triin binh quftn trong thdi ky dd li:

a Sip xd'p day sd theo thu tu tang (giam) dan

b Dim b io tfnh chat so sinh duoc giOa c&c mire dd trong day sd.

c Loai bo nhttng nhan td ng5u nhifin

d Khdng cd didu nk> a tren

Cdu 60: sau khi sit dung phuong phdp hdi quy, anh (chi) cd duffc hai hang sd'sau:

Yx = a + bx (1) x IS tieu thuc nguyen nhan

Yx = al + bl (2) t la thdi gian

trong cac cdu sau cdu n&o dung

a ( 1) la ham xu the', (2 ) ia ham sd biiu hien mdi lien he

b (2) 14 him xu the", (1) ia him sd biiu hien mdi lien quan

*c C4 (1) v i (2) diu bie’u hien mdi lien he cua hien ttftpig

Cdu 61: Muc dich cua cdc phumg phdp biiu hifn xu hudng phdt triin cua hiin tuong Id:

a Dua ra duoc tdc dd phit triin trogn tirng thdi ky

*b Loai bd tic ddng cua c ic nhan td ngSu nhien

c Dam bao tfnh so sinh duoc cua c&c mure dd trong day sd

d Nghifim ctru to'c dd tang giim qua t(mg thdi ky

Chuong VII

Cdu 62: Trong nhung cdu sau ddy cdu ndo ddng:

a Sd tuong ddi la chi sd

*b Chi sd ia sd tuong ddi

c Chi sd biiu hien quan he so sSnh giffa 2 hien trnjng c i biet

d Tat c i c ic cau tren diu ddng

Cdu 63: Ddc diim cua phuong phdp chi sd'ld:

a Khi cd nhiiu nhan td cung tham gia tfnh todn chi sd, chi cd mdt nhan td nghien ciru dugc cd dinh, c ic nhan td con thay ddi

*b Khi cd nhiiu nhan td cung tham gia tfnh toin chi sd, mdt sd nhan td duoc cd dinh mdt sd cdn lai thay ddi

c Khdng diiu nk> tmg sd cac diiu tren 14 dung

Cdu 64: Trong cdc cdu sau, cdu ndo la ddng.

a Chi sd chung la sd tuong ddi

b Chi sd ca the’ ia sd tuong ddi

20

*c Ca crii -s6 ghung va chi sd c i the diu l i s6 tuong ddi.

d Khdng cd loai chi sd nio a trin li sd tuong ddi,

Calt 6S:Nhupc diim cua cdng thiic tinh chi sd'phdt triin gid cd hi4n dang ding Id:

a Chinh lich tuyit ddi gitta gid tri vi m3u sd phin inh sd tiin g ii djnh ngirdi din phai

tra thim do tra thim (hoic tii't kiim) 6 ky bio cio do ting gii hoic giim g ii.

b Chua phan inh duoc bii'n ddng cua gii ca

* c Chira hoin toin loai trir dir^c anh hucmg cua khdi luong hing hoi tiiu thu, ngudi

la khdng cd dinh quyin ssd a ki bio cio.

d Ca ba va c diu ddng

Cdu 66: Tai sao khi tinh chi sd phdt triin cho kM i luong hdng hod tiiu thu, ngudi

la khdng cd dinh quyin sd'a ky hdo cdo.

a Ni'u di thdi ky quyin sd 6 ki bio cio?chinh lich giffa tif sd vi miu sd khdng phin

anh sd tiin ngudi dftn phai tra thim dii mua hing hoi b kl b io cio.

b Thdi kii quyin sd a ki bio cio khdng phin inh dir<yc biin dQt riing biit cua luqmg

hing hoi tiiu thu

c Thdi ky quyin sd 6 ky gdc loai trir duqrc anh hudng cua gid ca dfin biin ddng cua luong hing hoi tiiu thu

Cdu 67: Khi dung phucmg phap chi sd'binh qudn d i tinh chi sd phdt triin cho gid , quyin sd cua chi sd dd.

a Luong hing tiiu thu ky gdc

b Luong hing hoi tiiu thu ky nghiin ciru

c Mure tiiu thu hing hoi ky gdc

* d mure tiiu thu hing hoa ky bio cao

Cdu 68: Tai sao khi dung phuong phap chi sd binh qudn d i tinh sd phdt triin cho khdi luong hdng hod tieu thu, ngudi ta ddng chi sd binh qudn gia quyin md khdng dung chi sd'binh qudn dieu hod.

a Vi chi sd binh qudn diiu hoi khdng cho mdt dip sd

b VI chi sd binh quin cdng gia quyin thuin tiin hon cho trudng hop niy

* c Vi quyin sd sir dung khi tinh chi sd nay li mdt sd liiu gidi djnh

Cdu 69: Khi ddng phuong phdp chi so binh qudn d i tinh chi sd phdt triin, cho khdi luong hdng hod tieu thu, ta cd 2 cdng thuc sau:

a Trong cdng (hire (1) quyin sd l i

b Trong cdng thuc (2) quyin sd IS

Cdu 70: D i tinh sd binh qudn cua cdc chi sd cd th i vi gid ta cd 2 cdng thftc:

, _ — S m j— , , , , _ M — (2)

a Trong cong thiic ( 11 quyin so la

b Trong cdng tlurc (2) quyen sd li

iiu 71: Khi tfch chi tiiu sd so sdnh gid cd giita 2 thi tnfdng A vd ft ta tu uuitg quyin s i Id:

a Kh6i litfjng hdng hod tifu thu dthj trudng A.

b Khtfi iuc^ig hdng hod tiiu thu 6 thj tnrdng B,

* c Tdng khoi lw?ng hdng hod tieu thu 6 ca 2 thj tnidng cua cung mi)t mat hdng.

d Cd 3 phirong phdp diu diing

Cdu 72: Ni'u tinh chi s i khdng gian ctyo khdi luong hdng hod tiiu thu trin 2 thi tru&ng A vd B, quyin sd c6 th i Id

a gid ca cu# tfrng mdt hdng b thj trudng A va B

h Gid c6 djnh ciia tCmg mdt hdng do Nhd nude quy djnh

c Gid binh qudn cua tung mfit hdng trfin 2 thj trudng

'frong Jc» Z la ky hieu gia thdnh

q: KhO'i luong 'in phdm sin xudt ra

z Chi so’ ( I ) piiiu dnh

a Chinh l£ch tuyfit ddi giua tu vd m4u (1) phan dnh

k Chcnh ICch tuyet ddi giOra tu vd mdu (2) phan dnh

: Chinh lech tuyit ddi giQa tur vd mSu (3) phdn dnh

(1 Chfinh lech tuyftc ddi giQa tu vd mdu (4) phan dnh

Cau 7;>) eh; s&cSu thir]h Jkha.bifin bao g6m bie'n dfing cua:

a) Bin than tiiu thiic nghien cth i

B) Ice't ca'u tong thi theo tieu thiic nghien cih i

c) Bie'n d6ng cua tdng luong bie'n tieu thtic

d) Tat c i cic tieu thiic tren diu khftng ddng

* Ca a va b

Cau 76) Trong cdc cau dudi day , cSu nio l i tic dung ciia pp chi sS'

a) Biiu hien bi£n d6ng cua hien tuong KT-XH theo hoi gian

b) Biiu hien bi£n dflng cua hien tugng KT-XH qua tumg dia diim khic nhau

c) phan tfch mdi lien he giffa cic hien tircfng

d) Ca a v i b

e) Ca a, b v i c

Cau 77) Khi xay dung chi s6 lien hop cho gia ca quyin sd duoc chon li khdi luong

hing hoa tieu thu v i :

a) Giup cho viec chuyin dong tii tdng thi bao gdm c ic phin tir c6ng duoc vdi rihau thanh c ic phan tir khOng c6ng ducrc vdi nhau

b) Biiu hien tim quan trong v i luoung tieu thu cua ttrng mat h in g

c) Gitip cho viec chuyin g ii c i tflmg m it hing vdn khOng true tiip cOng lai vfli nhau thinh dang tdng g ii ca c6 the true tie'p cQng ducrc vdi nhau

d) Ca a v i c

e) Ca d vac

Cau 78) khi xfty dung chi sO' lien hop cho khdi lugmg hing hoi tieu thu quyin sd duoc

chon l i gii ck don vi hing hoi v l :

a) G ii c i biiu hien ty trong mile tieu thu cua tirng mit hing trong tdng miic tieu thu b) Giup cho viec chuyin tir tdng thi bao gdm c ic phin tu kkhdng cdng duoc vdi nhau c) Gii ca hing hoi khic nhau c6 inh hucmg deh luong hing hoi tieu thu

d )C i a b, c

e) Ci b v i c

Cau 79) Chi soo ci'u thinh p /a

a) Bien ddng cua bin thin tieu thiic dang nghien ciiu

b) Bie'n ddng cua tdng luong bi£n tieu thiic

c) Bie'n ddng cua ke't ca'u tdng thi theo tieu thtrc nghien ciiu

d) Bie'n ddng cua tit c i c ic nhan td tren

e.) Ca b va c

Ciu 80) Chi s6' anh hu&ng ket ciu p /a

a) Bie'n ddng cua bin than tieu thiic dang nghien ctiu

b) Bie'n ddng cua tdng luong bie'n tieu thiic

c) Bie'n ddng cua ke't ca'u ttdng thi theo tieu thiic nghien ciiu

d) Bie'n ddng tit ca c ic nhin td tren

e) Ca b va c

2 ’

thin t4af (h4 m4u

d) TCr c6c hhi& bi£l vd tham s6 dac tnmg cho tdng thfmiu suy ra th&nhcAc tham sd

cho t6ng th£ chung

TA I L it l) O N TUI M O N L Y TH UYHT T H O N G KE

PH A>^E Hav diin dung, sai cho c ic ciu sau;

Caui Khi phin id ilieo liiu thiic thu6c tfnh ,cii mAi loai binh luan lufln lu6 n hinh thanh ndn m6i 1 6 (d)

Cflul M0 duac dung dd' ndu Idn dac tnmg cua day sd phdr phdi khi day s<5 co nhidu lirgng bien cd tin sd bang nhau hoac xflip \i nhau (s)

Can3: ME rat nhav cam vdi nhtfng luong bi£n dot xuat trong day sd

Cflu4: Nghidn ciiu hd sd tuong quan c6n cho phep thay d'joc vai tro cua tir.ig tidu thiic nguvdn nhan ddi vdi tidu thiic kdt qua (d)

C5u5: Nghien cihi gia trjtuydl dodi cua l%tfing hoSc giam chinh l& su van dung kdt hop s6’ tuong'd6'i vh sd tuydt d6'i (d)

C ;u6: Loai bo ydii id ngiu nhidn ra khoi day s6 thdi gian khfing phai nhidm vu cua cac phuong phap bidu hidn xu hudng phdt tridn qua thdi gian (s)Cdu7: C6ng thuc tinh chi sd' gid theo phucmg phap chi s6 lien hop dang diing hien

n r 1 chira lor: trir duoc hoan loan anh hucmg ciia khdi luong hans hoa den bien

C1U18: Quvin sd irong cting thiic chi s6 binh quan cdng dd’ tinh chi s6 gia hang

ho6 tidu thu la mdt chi tidu cd sdlidu (hue id' (s)

Cau9: Phan t6 ihong kd giup cho vide nghidn ciiu cdi chung cai rieng md: each kdt hop (d)

Cftu 10: S6‘ tuydt ddi thdi di^m phan anh sy ifcli luy vd luong cua hidn tuong irong sudi thdi gian nghidn ciiu- (s)

CSu 11: S6 tuvdt dd'i thdi ky phan dnh trangthui cua hidn tuong nghidn ciiu trong m6 t thdi didm nha't djnh (s)

Cau 12: Phuong phap binh phucmg cac chdnh lich giiia cac gid tri ly thuydt vd cdc gid tri thuc td' cua bid'n phu ihuGc (d)

Cdu 13: Ddi vdi day sd thdi did’m c6 khoang cdch thdi gian bang nhau Miic dd binh qudn theo thdi gian chfnh la binh qudn cua timg nhdm hai miic dd (d)

Cdu 14: Phuong phdp chi sd Id phuong phdp phdn t/ch mdi lidn hd cho phdp

nghidn tiiu cdi chung vd bO phan mdt cdch hop Vj (d)

^ _.«4tv> v.vn/»mi«m*wii-uii.iui ia oinn quan cua cad luopg

ling (giam) tuyil doi liin hcran (jJ>

Cau 16: Piiuong phlp chi s6 ia fJhuong phap mang tfnh chat tdng hqp khdng mang

tinh chat phan tich (s)

Cau 17: Phan to thdng ki chi nghiin cdu mdi quan he cua m$i tieu thtic nguyin nhan v4 mdt tidu thifc kit qua (s)

Q u i8: He sd tuong quan chi cho pMp ihfiy du^c cuing dQ cua mdi lien quan tuvin tinh (s)

CAu 19: Tdc dd tAns (giam) binh qudn chfnh 14 binh quan cua cdc luqmg tang (giam) tuyet ddili£nho4n (s)

Cdu20: Chi sd gid cua m6t nhdm mat h4ng 14 chi tiiu vira mang tfnh i6ng hqrp vira mang tfnh phan tich (d)

Cau21: Nghien cihi chi sd chung cho ph£p tha'y duoc bie’n dQng cua tirng phan iCr don vi ca biet cua hiin tugng phuc tap (s)

Cau22: COng nhu sd binh qu4n miu dupe dtirig de uOc luqmg :d binh quan chung

.Tv li ihecrmOt liiu thuc n40 dd cua mSu din^.dung de udc lugng cho phuong sai

Cau29: Khi nghien cun $6 tuong ddi va sd urvit ddi cfa x6t dfa djc diim cua

hi^n tupng nghien ohide nit rak6 lu^n (d)

va mdt tiiu thiic kit qua vd vira nghiin ciiu mdi quan hi giQa n hiiutiiu thiic nguyin nhftn vdi mdt tiiu thiic kit qua (d)

Cftu36: Du doan dya trin hiin tuong tftng (giam) tuyit dd'i binh quftn chi duoc thuc hiin vdi day sd' thdi gian cung tdng (giam) vdi mdt luong luvit d6i gdn nhu nhau (d)

Cau37: Phuong phdp dudodn dya trin nguyin tftc tdc dd-piut iriin Wnhqudn chi diroc thuc hiin vdi day sd' thoi gian ciing tang (giam) vdi m u iirong tuvet dd'i nhu nhau (s)

Cau38: Cting nhu sd" binh mdu dirocdung di udc luong so binh quftn chung ly li iheo mot tiiu thuc nao dd cua mdu duoc dung dfe udc luong cho tv li cua lap the’ chung phuong sai sd' cua mdu duoc dung di udc luong cho phucmg sai chung (d)Cau39: Vdi cdc yiu ciu nhu nhau v i dd tin cfty vft pham vi sai s6 chon mdu niu

chon mftu theo phuong phdp chon mdt Idn sI cin ft dcrr vj hon klii chon theo

phuong.phdp chon nhiiu Idn (d)

Cau40: Phan td c6 khoang cdch td khdng chi duoc dp dung trong trucmg hop luong bii'n tiiu thiic bii'n thiin liin tuc (d)

Cftu41: Nghiin ciiu bii'n ddng cua s6 binh quftn cho tha'y xu hudng phdt triin cua hi$n tuong qua th&i gian (d)

Cau42: Cd thi diing sd tuy$t ddi di so sdnh hai hidn tuong ciing loai nhung khde nhau vi qui md (s)

Cftu43: Chi sd Id sd tuong ddi vl v$y tft't ca sd tuong ddi diu la chi sd (s)

Cau 44: Sai sd binh quin chon mitt Ibco phuong phap ch?!) nl\itu ldn b?o gid, cflng IA) han ho2c bingsai sd binh quarchpn miutheo phuong phlp choh.1**'

liin ( d )

Ciu 45: Trong cimg.thiic tinh sd don vj cSn ihMfi dd chqm rtiiu khi mudn uoc lupng ty 1* cua tdng thd chung jigutri tathayphMqftgsai cua tdng the chung t^ng phuong sai gin 0,5 nhit trong cic lin didu tratnfdedd (s)

Cau 46: Tin sd tfch lu? cho bkEtstf lu p g cfc den vj,cd lupngb&i nh6 hon hoic lGnhonmQtlWTng bifin cyth<$niod6 ( )

Cau47; Hft stf bidn ihidn khdng cho phdp so sinh sy bidn thien cua hai hi$n tuyng khic loai Trong khi cic chi tieu do dd btdntWdnkhic cho phdp lim didu dd ( )

✓

' '5nhonM EthlnhOnhda)vjc6iui?ngbt6nl6ns€

Ciu49: Khi ht s6 tuong quan ldn hon 0.9 thi mdilldn h$ giQa hai hiin luong

nghiin cuu hoin loin chit chi ( )

C8u 50: Loai bo ydu td ngdu nhidn ra khoi dSy $6 tMn gian khdng phai li nhi$m

vu cua cac phuong phip bid'u hidn xu hudng phit tridn qua thdi gian ( )Cau51: Du doin dya trtn vi$c ting hole giam tuy$t ddi binh quin khdng dm# thvrc hi^n vdi diysdthdi gian cung ting ho&cgiaffl vdi tdcdd nhu nhau ( )Cau 52: Tim ouan- ireng-CHa tune mit hang lim dt ydu td de' xic djnh trong sd trong cdng ihiic tfnh chi sd" gii ca binh quin ( )

Ciu 53: didu tra chgn miu khdng phai li mdt trudng hpp vdn dung qui luit sdldn

( i )Cau 54: Khi chon miu dfe udc luong ty Id ngudi ta khdng chon tfch P.Q gin 0.5 nhit trong c&c lin didu tra trvdc de tinh a ( )

Cau55: Phin td cd khoang cich td chi duqc ip dyng trong trudng hqrp luong bie'n lieu thuc bidn thien lidn tuc ( )

Cau 56: Me san bing bu trCr cic chdnh l$ch vd lupng trong d5y sd ( )Ciu 57: Chi sd tdng hpp khdi luyng sin phfai 1ft chi tieu vir mang tinhtdrig hgp vira mang tinh phin tfch- ^ J

3iu58: Nghidn ahj chi sd tdng hop khtag cho pWp thiy dupe bi6 ) ddng cut timg phin tu,donvjcibidtcuahi^ntupngpb«icifp ( )

( )

m u i m ui w u u n vi c:m tljici d i chon vao r»Au kJii inuii'n \s6c

luong iv le cua i6ng thd chung bing'ly Id 16n nhat trong cac lan didu tra inrdc.( )

Q u 6Q: Nhuoc diSm cua cdng thiic tinh chi s6 phit trin cua gia ca hidn dang d&ng

la.chua hoin toan loai chtr dupe anh huong cua kh6i luong hing hoi tidu thu din bid'n ddng gii ca (d)

Ciu61: T ic dung cua sd tuydt d6i IS di sau phin tfch tinh trang cua hidn tuqmg nghidn ciiu (s)

O il 62: Me la luong bid'n dung 6 vj tri chfnh gitta (rang mdt tip hgp sdJ lieu ( S )Ciu63: Khi xiy dung chi s6‘ lidn hop cho kh6j lu^ng h^nghoi tidu thu Quyin sd duoc chon l i g ii Ca hang hoi vi giiip cho vide chuydn tir ting thd' bao gdm c ic phun tir khdng cdng duoc vdi nhau thinh tdng thd c ic phin tucQng lai duoc vdi nhau va g ii ca hing hoi khic nhau cd anh hucmg dd'n bidn ddng cua lugng hing hoi tidu thu ( D )

Ciu 64: hd thd'ng chi tidu phan inh c ic khfa canh quan trong nha't cua tdng thd* chung ( S )

Cau 65: M„ l i mite dd nim a vj tri cao nha't cua duong cong tin sd' ti'cli !up ( S )

Cau 66: Sau khi phin td thd'ng kd c ic dcm vj c i bidt cd die diim gidng nhau theo tieu thuc phin td duoc dua vio mdt td Cd die didm khic nhau theo tidu thtic phin td duoc dua vao c ic td khic nhau v i c ic td cd tinh chit khic nhau (0 )Ciu67: Chi sd' ci'u thanh cd dinh phan inh bidn ddng cua ban thin tidu thtic dang nghidn ctiu (SI

Giu 68: LTu did’m cua s6 trung vj la loai trir anh huong cua nhung lupng bid'n ddi

C iu7I: Sd' tuydt dd'i phan inh quy md khdi Juong cua hidn tuong trong mdt dd dai

rhiri gian nha't dinh (D)

Cau 72: Tdng thd thd'ng kd li hidn tuong kinh td x i h<ti sdldn gdm tihfing don vj hoic phin tir hidn tuong c i bidt cin duoc quan sit v i nghidn ctiu (D)

Cau73: Dac diem cua phuong phap chi sd liin hop li khi c6 nhiiu nhftn 16 cung

thatn gia u'nh lodn chi s6 , mOt sd nhan td' s6 duoc cd djnh mOi sd nhan id cdn iai

thay ddi (S)

Cau74: Nhitm vu cua phan td (hdng k i 11 phftn chia loai hinh kinh te' xa h d i, biiu hidn mdi lien vi kdt cdu cua tdng th i( D )

Cdu 75 ; Gid ving thing 3 thinh phd Hd Chf Minh bing 110% so vdi Ha Ndi la

sd tuong ddi d$ng thdi (S)

cau 76: Thdi ky diiu tra li dd dii thdi gian nhdn vien didu tra di thu thdp tii lieuCau 77: Phan td ihdng ke la phuong phdp quan trpng trong diiu tra vd phan ti'ch thdng k e Nd giup cho viec nghidn ciiu cdi chung vd cdi rieng mdt cdch ke'i hop.cau 78: Tap thi thdy cd giang day irons inidng KTQD Id tdng the' tiim Sr\ (S)Cdu79: Quan he so sdnli giOa-gid ca cdc mat hdng giiia cac thj irudng la bifeu hidh

cua sd tuyet ddi (S)

Cau 80: T(T cdc hieu bie'l vi cdc tham sd dac irima cho tdng the' chung suy ludn ra thanh cdc tham sd cho t6ng the mdu goi Id udc luor r (S)

(S)

(D)