Question

The number of cars sold at a dealership over several weeks is given below. 14, 23, 31, 29, 33 What is the standard deviation for this set of population data? Standard deviation: Sigma = StartRoot StartFraction (x 1 minus mu) squared (x 2 minus mu) squared ellipsis (x N minus mu) squared Over N EndFraction EndRoot 6. 9 12. 4 15. 4 47. 2.

Answer 1

6.9

Explanation:

Find mean: 26

Subtract each value from mean: 12, 3, -5, -3, -7

Square them: 144, 9, 25, 9, 46

Add together: 233

Divide by how many data points: 46.6

Find square root: 6.826