### The questions are related to the calculation and definitions of mean, median, mode, cumulative frequency, relative frequency, parameter, statistic and population.

15. 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 Use classes of 0-4, 5-0 an