100 STATISTICAL TESTS phần 2 pps

... “CHAP04” — 20 06/6/10 — 17 :22 — PAGE 20 — #2 GOKA: “CHAP05A” — 20 06/6/10 — 17 :22 — PAGE 32 — # 12 32 100 STATISTICAL TESTS Numerical calculation n 1 = 12, n 2 = 12, ¯x 1 = 31.75, ¯x 2 = 28 .67, ν ... n 1 + n 2 − 2 s 2 1 = 1 12. 25, s 2 2 = 66.64 s 2 = 89.445 t = 0.798, ν = 12 + 12 2 = 22 Critical value t 22 ; 0. 025 = 2. 07 [Table 2] . Reject the altern...

Ngày tải lên: 23/07/2014, 16:21

... PAGE 1 52 — #16 1 52 100 STATISTICAL TESTS Hence Y 10 = 1 + 2 + 3 3 = 2, Y 20 = 7 + 5 + 6 3 = 6, Y 00 = 1 + 2 + 3 +7 +5 + 6 6 = 4 s 2 B = 3 (2 −4) 2 + 3(6 −4) 2 = 24 s 2 E = (1 − 2) 2 + (2 2) 2 + ... 35 35 34 28 40 37 37 36 35 34 34 32 35 32 30 26 40 34 36 34 34 33 31 32 29 Teacher total 22 7 21 0 193 26 9 24 4 24 1 24 0 23 0 22 7 22 0 22 3 21...

Ngày tải lên: 23/07/2014, 16:21

... “CHAP05B” — 20 06/6/10 — 17 :22 — PAGE 92 — # 32 92 100 STATISTICAL TESTS Numerical calculation n 11 = 32, n 21 = 12, n 12 = 14, n 22 = 22 , n 13 = 6, n 23 = 9 n 1· = 52, n 2 = 43, n ·1 = 44, n 2 = 36, ... 1) (2 −1) = 2, χ 2 2;0.05 = 5.99 [Table 5] χ 2 = 7.9 2 24.1 + (−7.9) 2 19.9 + (−5.7) 2 19.7 + (5.7) 2 16.3 + ( 2. 2) 2 8 .2 + 2. 2 2 6.8 = 10.67 H...

Ngày tải lên: 23/07/2014, 16:21

... 1 62 161 160 160 16 0.05 21 3 20 9 20 6 20 4 20 3 20 1 20 0 199 0.01 196 1 92 190 188 187 186 185 184 17 0.05 24 1 23 7 23 4 23 2 23 1 22 9 22 8 22 7 0.01 22 3 21 9 21 7 21 5 21 3 21 2 21 1 21 0 18 0.05 27 2 26 7 26 4 26 2 ... 26 7 26 4 26 2 26 0 25 9 25 7 25 6 0.01 25 2 24 8 24 5 24 3 24 1 24 0 23 9 23 8 19 0.05 304 29 9 29 6 29 4 29 2 29 0 2...

Ngày tải lên: 23/07/2014, 16:21

... 19.76 20 . 02 20 .26 20 .49 20 .70 20 .89 21 .21 21 . 42 21. 52 21.49 21 . 32 12 19.68 19.97 20 .26 20 .55 20 .83 21 .10 21 .36 21 .61 21 .84 22 .06 22 .27 22 . 62 22. 88 23 .06 23 . 12 23.07 13 21 .03 21 . 32 21.60 21 .89 22 .16 ... 2. 07 2. 24 2. 36 2. 44 2. 51 2. 57 2. 62 2.67 16 2. 06 2. 23 2. 34 2. 43 2. 50 2. 56 2. 61 2. 65 17 2. 05 2. 22...

Ngày tải lên: 23/07/2014, 16:21

... 2. 40 12 2.75 2. 69 2. 62 2.54 2. 51 2. 47 2. 43 2. 38 2. 34 2. 30 13 2. 67 2. 60 2. 53 2. 46 2. 42 2.38 2. 34 2. 30 2. 25 2. 21 14 2. 60 2. 53 2. 46 2. 39 2. 35 2. 31 2. 27 2. 22 2.18 2. 13 15 2. 54 2. 48 2. 40 2. 33 2. 29 2. 25 2. 20 2. 16 ... 2. 43 2. 35 2. 28 2. 22 30 4.17 3. 32 2. 92 2.69 2. 53 2. 42 2.33 2. 27 2. 21 40 4.08 3 .23 2. 8...

Ngày tải lên: 23/07/2014, 16:21

... 28 .6, 25 .4, 29 .2, 27 .6, 25 .6, 26 .4, 27 .7, 28 .2, 29 .0 Sample S 2 : 28 .5, 30.0, 28 .8. 25 .3, 28 .4, 26 .5, 27 .2, 29 .3, 26 .2, 27 .5 GOKA: “CHAP05C” — 20 06/6/10 — 17 :23 — PAGE 120 — #22 120 100 STATISTICAL ... 22 9.788 = 0.05079, s 2 E = 4568.38, s 2 N = 20 4.35 Let σ 2 = 16, then s 2 E σ 2 = 28 5. 52 and s 2 N σ 2 = 12. 77, s 2 R =...

Ngày tải lên: 23/07/2014, 16:21

... hypothesis. GOKA: “CHAP05B” — 20 06/6/10 — 17 :22 — PAGE 80 — #20 80 100 STATISTICAL TESTS E 1 = 20 , E 2 = 20 , E 3 = 20 , E 4 = 20 , E 5 = 20 , E 6 = 20 χ 2 = 25 20 + 9 20 + 25 20 + 9 20 + 16 20 + 16 20 = 5.0 Critical ... calculation n 1 = 4, n 2 = 9, ¯x 1 = 3166, ¯x 2 = 22 40.4, α = 0. 025 s 2 1 = 6 328 .67, s 2 2 = 22 1 661.3, s 1 = 79.6, s 2...

Ngày tải lên: 23/07/2014, 16:21

... 1505, x 2 = 1 528 , x ·3 = 1564, x ·4 = 1498, x ·5 = 1600, x ·6 = 1470 ¯x ·· = 9165/6 = 1 527 .5 s 2 1 /5 = 11 27 2, s 2 2 /24 = 24 51, s 2 T = 39 72 N(x ·· − µ 0 ) 2 = 22 687.5 (a) F = 11 27 2 /24 51 = ... — 20 06/6/10 — 17 :22 — PAGE 52 — # 32 52 100 STATISTICAL TESTS A combined test can be obtained using the test statistic χ 2 =  K 3 (K 2 ) 3 2 ×  n 6  1...

Ngày tải lên: 23/07/2014, 16:21

... σ 2 2 2. H 0 : σ 2 1 = σ 2 2 H 1 : σ 2 1 >σ 2 2 Test statistics F = s 2 1 s 2 2 , (s 2 1 > s 2 2 ) where s 2 1 and s 2 2 are sample variances. (If, in 2, s 2 1 < s 2 2 , do not reject ... n 2 – 2; 0. 025 t n 1 + n 2 – 2; 0. 025 2. t n 1 + n 2 – 2; 0.05 0.05 Data H 0 : µ 1 − µ 2 = 0 n 1 = 16, n 2 = 16 ¯x 1 = 5.0, ¯x 2 = 4 s = 2. 0...

Ngày tải lên: 23/07/2014, 16:21