What is the variance of 7,4,2,5,8,2,4,8,6,3 ?

The variance of 7,4,2,5,8,2,4,8,6,3 is 5.21111…

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variance of 7,4,2,5,8,2,4,8,6,3

variance

7, 4, 2, 5, 8, 2, 4, 8, 6, 3

5.21111 \dots

Solution steps

Compute the average,

\overset{x}{ˉ} : 4.9

Compute

i = 1 \sum n (x_{i} - \overset{x}{ˉ})^{2} : 46.9

Compute the number of terms in the data set:

n = 10

Compute

Va r (X) = i = 1 \sum n \frac{( x _{i} - x ˉ ) ^{2}}{n - 1} : 5.21111 \dots

5.21111 \dots

13 c 3

18, 6, 18, 6, 9, 7, 17, 6, 17, 9

7 C 3

11, 18, 52, 13, 6

52 c 5

What is the variance of 7,4,2,5,8,2,4,8,6,3 ?
The variance of 7,4,2,5,8,2,4,8,6,3 is 5.21111…