Question: In Chapter 1 we described graphically with a frequency distribution

In Chapter 1 we described graphically, with a frequency distribution and histogram, the time (in seconds) for a random sample of n = 110 employees to complete a particular task. Describe the data in Table 1.6 numerically. The data are stored in the data file Completion Times.
a. Find the mean time.
b. Find the variance and standard deviation.
c. Find the coefficient of variation.

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