What is the variance of 10,16,12,15,9,16,10,17,12,15 ?

The variance of 10,16,12,15,9,16,10,17,12,15 is 8.62222…

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variance of 10,16,12,15,9,16,10,17,12,15

variance

10, 16, 12, 15, 9, 16, 10, 17, 12, 15

8.62222 \dots

Solution steps

Compute the average,

\overset{x}{ˉ} : 13.2

Compute

i = 1 \sum n (x_{i} - \overset{x}{ˉ})^{2} : 77.6

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} : 8.62222 \dots

8.62222 \dots

8, 4, 2, 5, 5, 8, 5, 8, 2, 7

C (8, 2)

179, 179, 212, 212, 225, 254, 260, 281

8 C 0

1, 2

What is the variance of 10,16,12,15,9,16,10,17,12,15 ?
The variance of 10,16,12,15,9,16,10,17,12,15 is 8.62222…