# Question: For a sample of five different years from the period

For a sample of five different years from the period 1960 through 2007, it is found that U.S. work stoppages involving at least 1000 workers occurred 268 times in one of these years, with 424, 235, 145, and 44 work stoppages in the other four.

a. Determine the mean, median, range, and midrange.

b. Calculate the mean absolute deviation.

c. Calculate the standard deviation and variance.

A computer and statistical software will be desirable and useful. However, any necessary calculations can also be done with the aid of a pocket calculator. For readers using statistical software, keep in mind the file-naming key— for example, the data for Exercise 3.57 will be in data file XR03057.

In exercise

a. Determine the mean, median, range, and midrange.

b. Calculate the mean absolute deviation.

c. Calculate the standard deviation and variance.

A computer and statistical software will be desirable and useful. However, any necessary calculations can also be done with the aid of a pocket calculator. For readers using statistical software, keep in mind the file-naming key— for example, the data for Exercise 3.57 will be in data file XR03057.

In exercise

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