What is the variance of 12,18,23,14,20,17,19,17,13,15 ?

The variance of 12,18,23,14,20,17,19,17,13,15 is 11.51111…

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variance of 12,18,23,14,20,17,19,17,13,15

variance

12, 18, 23, 14, 20, 17, 19, 17, 13, 15

11.51111 \dots

Solution steps

Compute the average,

\overset{x}{ˉ} : 16.8

Compute

i = 1 \sum n (x_{i} - \overset{x}{ˉ})^{2} : 103.6

Compute the number of terms in the data set:

n = 10

Compute

Va r (X) = i = 1 \sum n \frac{( x _{i} - x ˉ ) ^{2}}{n - 1} : 11.51111 \dots

11.51111 \dots

f (P) = 7 P^{2}

18 C 4

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

40000, 32000, 28000, 24000, 23000, 22000, 20000, 18000, 17000, 16000

18 c 3

What is the variance of 12,18,23,14,20,17,19,17,13,15 ?
The variance of 12,18,23,14,20,17,19,17,13,15 is 11.51111…