Sorting through unsolicited e-mail and spam affects the productivity of office workers

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Sorting through unsolicited e-mail and spam affects the productivity of office workers. An 

InsightExpress survey monitored office workers to determine the unproductive time per day 

devoted to unsolicited e-mail and spam (USA Today, November 13, 2003). 

The following data show a sample of time in minutes devoted to this task. 

2 4 8 4 8 1 2 32 

12 1 5 7 5 5 3 4 

24 19 4 14

Summarize the data by constructing the following: 

a. A frequency distribution (classes 1-5, 6-10, 11-15, 16-20, and so on) 

b. A relative frequency distribution 

c. A cumulative frequency distribution 

d. A cumulative relative frequency distribution 

e. An ogive (with cumulative percent frequency on the Y axis)

f. Find the mode, median, 1st quartile, third quartile using the graphs above.