What is the variance of 28,42,58,48,45,55,60,49,50 ?

The variance of 28,42,58,48,45,55,60,49,50 is 92.75

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variance of 28,42,58,48,45,55,60,49,50

variance

28, 42, 58, 48, 45, 55, 60, 49, 50

92.75

Solution steps

Compute the average,

\overset{x}{ˉ} : 48.33333 \dots

Compute

i = 1 \sum n (x_{i} - \overset{x}{ˉ})^{2} : 742

Compute the number of terms in the data set:

n = 9

Compute

Va r (X) = i = 1 \sum n \frac{( x _{i} - x ˉ ) ^{2}}{n - 1} : 92.75

92.75

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

13 C 4

12 C 6

96.2, 92.2, 94.5, 87.5, 95.1, 228.2

P (6, 3)

What is the variance of 28,42,58,48,45,55,60,49,50 ?
The variance of 28,42,58,48,45,55,60,49,50 is 92.75