1.6 ,
, | -, ni, | - -, xi, | |||||||
ni × xi | xi2 | ni × xi2 | ai | ni × ai | ai2 | ni × ai2 | |||
6,0 10,0 | - 4 | - 8 | |||||||
10,1 14,0 | - 3 | - 12 | |||||||
14,1 18,0 | - 2 | - 22 | |||||||
18,1 22,0 | - 1 | - 16 | |||||||
22,1 26,0 | |||||||||
26,1 30,0 | |||||||||
30,1 34,0 | |||||||||
34,1 38,0 | |||||||||
38,1 42,0 | |||||||||
42,1 46,0 | |||||||||
∑ ni = n=100 | ∑ ni × xi = | ∑ ni × xi2= | ∑ ni × ai = | ∑ ni × ai2 = |
, . = 24 , .. .
1.6 . . .
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xi .
: x = 2488 / 100 = 24,88 .
.
: = 67456 ((2488)2 / 100)2= 5554,56 .2
.
: x = 24 + ((22/100)× 4)= 24,88 .
x1 = x2 = 24,88 .
,
xi - ; -
: = (352 (22 / 100)) × 16 = 5554,56 .2
1 = 2 = 5554,56 .2
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