What is the variance of 62,77,78,80,82,82,83,84,85,87,89,95 ?

The variance of 62,77,78,80,82,82,83,84,85,87,89,95 is 63.81818…

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variance of 62,77,78,80,82,82,83,84,85,87,89,95

variance

62, 77, 78, 80, 82, 82, 83, 84, 85, 87, 89, 95

63.81818 \dots

Solution steps

Compute the average,

\overset{x}{ˉ} : 82

Compute

i = 1 \sum n (x_{i} - \overset{x}{ˉ})^{2} : 702

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} : 63.81818 \dots

63.81818 \dots

3 π

600, 470, 170, 430, 300

15 c 10

15, 15

5 C 1

What is the variance of 62,77,78,80,82,82,83,84,85,87,89,95 ?
The variance of 62,77,78,80,82,82,83,84,85,87,89,95 is 63.81818…