"rzx" - 1 õppematerjal

Juhuslikud sündmused

 x- y 15,567 + 47,3 t = = = 12,421 . s2 s y2 66,323 702,148 x + + n1 n2 30 30 t = t / 2 (n - 1) = t 0,16 (29) = 1,442 . , x = y = 32% . .. 5%; 0,3% 32%, , , = 5%, = 0,3% x = y . 142. ryx rzx. . . ryx. : n (x i - x)( yi - y ) rxy = i =1 . n n ( xi - x ) 2 ( y i - y ) 2 i =1 i =1 , rxy = -0,973 . . r n-2 0,973 28 t = = = 96,50 . 1- r 2