Question

39, 45, 50 ,55, 60

The standard deviation of the sample data is

Answer 1

Explanation:

Sum of the numbers: 39+45+50+55+60= 249

Mean: 249/5= 49.8

Find the distance from the mean and square it

[39-49.8] =-10.8²= -116.64

[45-49.8]=-4.8²= -23.04

[50-49.8]=.2²= .04

[55-49.8]=5.2²=27.04

[60-49.8]=10.2²=104.04

Now add up all of the distances

-8.92 and divide by number in the set

-8.92/5= -1.784

Answer 1.78