What is the variance of-25,2,3,3,8,10,12,14,18,21,21 ?

The variance of-25,2,3,3,8,10,12,14,18,21,21 is 166.89090…

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variance of-25,2,3,3,8,10,12,14,18,21,21

variance

- 25, 2, 3, 3, 8, 10, 12, 14, 18, 21, 21

166.89090 \dots

Solution steps

Compute the average,

\overset{x}{ˉ} : 7.90909 \dots

Compute

i = 1 \sum n (x_{i} - \overset{x}{ˉ})^{2} : 1668.90909 \dots

Compute the number of terms in the data set:

n = 11

Compute

Va r (X) = i = 1 \sum n \frac{( x _{i} - x ˉ ) ^{2}}{n - 1} : 166.89090 \dots

166.89090 \dots

18 C 2

6, 7, 8, 9, 10

3, 4, 5, 7, 7, 7, 9

90, 97, 95, 93, 90

12 c 7

What is the variance of-25,2,3,3,8,10,12,14,18,21,21 ?
The variance of-25,2,3,3,8,10,12,14,18,21,21 is 166.89090…