What is the variance of 100,100,101,102,108,109,109,109,110 ?

The variance of 100,100,101,102,108,109,109,109,110 is 19.5

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variance of 100,100,101,102,108,109,109,109,110

variance

100, 100, 101, 102, 108, 109, 109, 109, 110

19.5

Solution steps

Compute the average,

\overset{x}{ˉ} : 105.33333 \dots

Compute

i = 1 \sum n (x_{i} - \overset{x}{ˉ})^{2} : 156

Compute the number of terms in the data set:

n = 9

Compute

Va r (X) = i = 1 \sum n \frac{( x _{i} - x ˉ ) ^{2}}{n - 1} : 19.5

19.5

9 P 6

36 C 7

9 p i

72, 68, 70, 74, 66

- 12, 0

What is the variance of 100,100,101,102,108,109,109,109,110 ?
The variance of 100,100,101,102,108,109,109,109,110 is 19.5