- N€u F 66 > F Crit as thi tuong t6c A B c6 enh huong den ket qua.
Theo ki5t qui xri l! trong vi r1u, ta rit ra k6t luAn:
_, _ - Fe= 14 9898 > Fo sa= 2.86627, do tld cric c6ng thric ph6n b6n iinh hutug kh6c nhau
oen nang suat bong.
,.. ^- Fr= 3.22194 <FosB= 3.25944, n€n tdng m6t rlQ c6y kh6ng hy vgng Dm ting neng
suar Dong.
- Fas = 1.46684 < Fo.ses = 2.36375, n€n 6nh hudng ddng thdi cta ci hai nhgn t6
kh6ng tdc d6ng dring kd tdi nang su6r b6ng.
Chn j: F Ii rhuyer c6 the rim bing him FINV, vi giri rri t cung c6 th. tim <!uoc bing
hdmTINV
Ndu k6t tu{n c6c mric cia mQt nh6n t6 inh huong khdc nhau rhi ta so s6nh trung blnh criac6c mtc trorg cr)ng nh6n t5 v6i nhau trri tim mrlc tr5inh6t ( rem tuong ru nhu mu" ilz a uirl- c6c mtc trorg cr)ng nh6n t5 v6i nhau trri tim mrlc tr5inh6t ( rem tuong ru nhu mu" ilz a uirl-
2, Ki6m itinh sg bing nhau cria 2 phuoag sai
., pai tgin t Aaf Id cirn so s6nh piuong sai hai miu th6ng qua vi€c kidm dinh gia thuy6t
Ho : or'=o2',(phuong sai cua bi€n I bing phuong sai ctia bidn 2) v6i d6i thuidt
Hr: ot'oozz d mfc f nghia a.
C6c budr thuc hi6n
Chon Datq >Data Analysis > F-Tesr Two Sample for Variance, sau d,6ldn luot tra loi:
. ,- Variabte I Range: midn vdo cia bi6n t ttc ll mlEn chua si5 tieu, k6 ca ten aOn! aiu cta m6u quan siit.
.-Variable 2 Range: Midn vio cria m6u quan s6t thf hai k€ c6 t€n ddng dAu cria'm6u
quan sdt.
- Labels: Nilu cin th€m ddng diu vB ten biiin thi chon mgc niy.
- Alpha: Mrlc f nghia (0.05 hoec 0.01.)