"115300" - 1 õppematerjal

Juhuslikud sündmused

1 1 2 s x2 = xi2 n xi - x B = (4 2 4 + 9 2 10 + 14 2 6 + 19 2 64 + 24 2 15 + 29 2 3) - 18,45 2 = n 100 36285 = - 18,45 2 = 362,85 - 340,4025 = 22,448 . 100 1 1 2 s y2 = y i2 n yi - y B = (10 2 5 + 20 2 10 + 30 2 54 + 40 2 17 + 50 2 14) - 32,5 2 = n 100 115300 = - 32,5 2 = 1153 - 1056,25 = 96,75 . 100 B ( x) = s x2 = 22,448 = 4,738 . B ( y ) = s y2 = 96,75 = 9,836 . r = n x - nx = 63700 - 100 18,45 32,5 = 0,802 . n ( ) ( ) 100 4,738 9,836 , y x 9,836 - 32,5 = 0,802 ( - 18,45) . 4,738 115