In: Finance
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