what is the population variance of the following set of numbers 3,5,8,9,10?

Solutions

Expert Solution

First we have to compute the mean

Add all the numbers

3+5+8+9+10 =35

To determine the mean 35 to be divided by 5

Mean = 7

To determine the variance the difference between the number and mean to be calculated

3-7= -4

5-7=-2

8-7=1

9-7=2

10-7=3

Variance = summation of squares of the differences

= -4^2 +(-2)^2+1^2+2^2+3^2

= 16+4+1+4+9

=34

Standard deviation = variance

=34

= 5.83

Population variance is 5.83

jeff jeffy answered 1 year ago

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