What is the variance of 4,6,7,9,10,11 ?

The variance of 4,6,7,9,10,11 is 6.96666…

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variance of 4,6,7,9,10,11

variance

4, 6, 7, 9, 10, 11

6.96666 \dots

Solution steps

Compute the average,

\overset{x}{ˉ} : 7.83333 \dots

Compute

i = 1 \sum n (x_{i} - \overset{x}{ˉ})^{2} : 34.83333 \dots

Compute the number of terms in the data set:

n = 6

Compute

Va r (X) = i = 1 \sum n \frac{( x _{i} - x ˉ ) ^{2}}{n - 1} : 6.96666 \dots

6.96666 \dots

23, 50, 49, 48, 49, 32, 37, 40, 41, 42, 41, 41, 43

18 c h oose 6

7, 4, 2, 4, 3, 5, 7, 6, 3, 5

90, 97, 95, 93, 90

6 c 2

What is the variance of 4,6,7,9,10,11 ?
The variance of 4,6,7,9,10,11 is 6.96666…