Consider the following data. 14 21 23 21 16 19 22 25 16 16 24 24 25 19 16 19 18 19 21 12 16 17 18 23 25 20 23 16 20 19 24 26 15 22 24 20 22 24 22 20

a) Develop a frequency distribution using 5 classes. b) Develop a relative frequency distribution and a percent frequency distribution.

2) A doctor's office staff studied the waiting times for patients who arrive at the office with a request for emergency service. The following data with waiting times in minutes were collected over a one-month period. 2 5 10 12 4 4 5 17 11 8

9 8 12 21 6 8 7 13 18 3 a) Show the frequency distribution with 4 classes. b) Show the relative frequency distribution.

3) 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 with 6 classes. b) A relative frequency distribution