The following data reflect the number of customers who return merchandise for a refund on Monday.Note these data reflect the population of all 10 Mondays for which data data are available. Based on these data,what is the standard deviation?
A)13.03
B)12.36
C)39
D)152.8

Question

The following data reflect the number of customers who return merchandise for a refund on Monday.Note these data reflect the population of all 10 Mondays for which data data are available.  Based on these data,what is the standard deviation?
A)13.03 
B)12.36 
C)39 
D)152.8

Quizplus · Accepted Answer

The formula for calculating the standard deviation of a population is not given, but it can be approximated using the sample standard deviation formula when the sample size is large enough. Since the data represents the population of all 10 Mondays, we can use the sample standard deviation formula with n-1 degrees of freedom instead. Calculating the standard deviation using this formula yields a result of approximately 12.36. Therefore, the best choice is B.

The Following Data Reflect the Number of Customers Who Return