What is the variance of 9,8,6,6,8,6,3,9,4,6 ?

The variance of 9,8,6,6,8,6,3,9,4,6 is 4.05555…

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variance of 9,8,6,6,8,6,3,9,4,6

variance

9, 8, 6, 6, 8, 6, 3, 9, 4, 6

4.05555 \dots

Solution steps

Compute the average,

\overset{x}{ˉ} : 6.5

Compute

i = 1 \sum n (x_{i} - \overset{x}{ˉ})^{2} : 36.5

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} : 4.05555 \dots

4.05555 \dots

20, 16, 18, 14, 9, 20, 16

1, 2, 3, 4, 5, 6, 7, 8

5 c 5

12, 6, 2, 8, 10

3 c h oose 0

What is the variance of 9,8,6,6,8,6,3,9,4,6 ?
The variance of 9,8,6,6,8,6,3,9,4,6 is 4.05555…