Question

Asked Jan 11, 2020

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The heights, in inches, of the members of a barbershop quartet of singers are listed below.

72,68,67,73

If the population variance for this data set is 6.5, what is the standard deviation of the heights of the barbershop quartet? Round your answer to 2 decimal places.

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**Formula for standard deviation and variance:**

Suppose *x*1, *x*2, …, *xn* is a data set of *n* observations belonging to a population, and *x̄* is the population mean for the *n* observations. Then, the variance is the ave...

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