What is the variance of 1.8,2.5,2.6,4.4,4.4,7.3,8,9.5,10.3,10.4,11.1,11.7 ?

The variance of 1.8,2.5,2.6,4.4,4.4,7.3,8,9.5,10.3,10.4,11.1,11.7 is 13.53272…

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variance of 1.8,2.5,2.6,4.4,4.4,7.3,8,9.5,10.3,10.4,11.1,11.7

variance

13.53272 \dots

Solution steps

Compute the average,

\overset{x}{ˉ} : 7

Compute

i = 1 \sum n (x_{i} - \overset{x}{ˉ})^{2} : 148.86

Compute the number of terms in the data set:

n = 12

Compute

Va r (X) = i = 1 \sum n \frac{( x _{i} - x ˉ ) ^{2}}{n - 1} : 13.53272 \dots

13.53272 \dots

What is the variance of 1.8,2.5,2.6,4.4,4.4,7.3,8,9.5,10.3,10.4,11.1,11.7 ?
The variance of 1.8,2.5,2.6,4.4,4.4,7.3,8,9.5,10.3,10.4,11.1,11.7 is 13.53272…