Class 11 Maths Statistics Variance

Variance:

Sample A:  2, 2, 2, 2, -2, -2, -2, -2

Sample B : 3, 1, 3, 1, -3,-1,-3,-1

Mean for both Sample A & B is 0.

Aslo number of terms, N in both case is 8.

Variance for Sample A is 32/8 =4

Variance for Sample B is 40/8 =5

 

 

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