Question

The mean of a data set is equal to 10 and its standard deviation is equal to 1. If we add 5 to each data value, then the mean and standard deviation become a. Mean = 15 , standard deviation = 6 b. Mean = 10 , standard deviation = 6 c. Mean = 15 , standard deviation = 1 d. Mean = 10 , standard deviation = 1

Answer 1

Answer:

You have to google it

Step-by-step explanation:

Answer 2

Answer:

Coefficient of variation (Cv) is defined as Standard deviation / Absolute value of mean.

When coefficient of variation is higher then it mainly have greater level of dispersion around the mean.

This would mainly give the superior aspects for expressed as a percentage.

With lower value of the coefficient in variation having the precise the estimate and mainly gives adequate facilities.