What is the variance of 3,9,8,9,4,5,7,11,9,7,5,4,3,1 ?

The variance of 3,9,8,9,4,5,7,11,9,7,5,4,3,1 is 8.53296…

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variance of 3,9,8,9,4,5,7,11,9,7,5,4,3,1

variance

3, 9, 8, 9, 4, 5, 7, 11, 9, 7, 5, 4, 3, 1

8.53296 \dots

Solution steps

Compute the average,

\overset{x}{ˉ} : 6.07142 \dots

Compute

i = 1 \sum n (x_{i} - \overset{x}{ˉ})^{2} : 110.92857 \dots

Compute the number of terms in the data set:

n = 14

Compute

Va r (X) = i = 1 \sum n \frac{( x _{i} - x ˉ ) ^{2}}{n - 1} : 8.53296 \dots

8.53296 \dots

5 P 1

C (5, 0)

7, 7, 6

6 P 4

61, 32, 70, 40, 43, 54, 63, 72, 78, 70, 82, 85, 61, 73

What is the variance of 3,9,8,9,4,5,7,11,9,7,5,4,3,1 ?
The variance of 3,9,8,9,4,5,7,11,9,7,5,4,3,1 is 8.53296…