() , .. , , .. .
, .
= , (3.21)
m ; i - ; n i i - .
s 21 ( ) ( k 1 = m 1)
s 21 = . (3.22)
s 22 ( () ) , , . . ( k 2 = m)
s 22 = . (3.23)
() F.
F = s 21 / s 22 F 1α, k 1 = m 1; k 2 = m α ( 3.3), , .. . , σ2 a.
σ2 () s 2, .
s 2 = . (3.24)
s 2 k = 1 (32) (34)
, (3.25)
. (3.26)
F = s 21 / s 22 > F 1α, .
m σ2 i. σ2 s 22, i . σ2 i k = m , (3.25) (3.26):
, (3.25)
. (3.26)
, ,
σ2 a = , (3.27)
. , 1, 2,, i,, m , .
σ2 a .
|
|
( σ2 a)
s 2 a = (3.28)
n 1 = n 2 = = n i = = n m = n
s 2 a = (s 21 s 22)/ n. (3.29)
3.8.
s2i | |||
403; 404; 411; 403; 405; 408; 410; 407; 405; 410 413; 408; 415; 415; 416; 408 400; 400; 405; 410; 407; 403 420; 412; 406; 412; 408; 418; 416 400; 410; 415; 416; 403 421; 418; 416; 415; 410 405; 406; 405; 415; 401 425; 421; 415; 420; 419; 416 408; 410; 419; 400; 403 428; 421; 409; 418; 413 408; 418; 416; 416; 415; 410 420; 418; 425; 406; 413 403; 405; 418; 410; 407; 405; 410 412; 406; 412; 408; 418 412; 416; 402; 408; 408 | 406,6 412,5 404,2 414,6 408,8 416,0 406,4 419,3 408,0 417,8 413,8 416,4 408,3 411,2 409,2 | 9,16 13,10 15,77 16,95 50,70 16,50 26,80 13,07 53,50 53,70 15,37 52,30 25,24 21,20 27,20 |
, n i ≥ 5 ,
(3.13)
χ2 = = 11,6337,
= 1 + = 1,0777;
s 2 = = 25,06.
2.10 α = 0,01 k = m 1 = 14
χ20,01 = 29,1
(3.16)
χ2 = 25,06 < χ20,01 = 29,1
.
(3.21)
= = 411,33.
(3.22) ( k 1 = m 1 = 14)
s 21 = = 126,39.
() (3.23) ( k 2 = m = 87 15 = 72)
s 22 = = 25,4
F = s 21 / s 22 = 4,974.
( 3.3)
,
= 411,33.
s 2 = 25,06.