24. One question on a student survey asks: In a typical week, how many times do you eat at a fast food restaurant? The following frequency distribution table summarizes the results for a sample of n 20 students.

Number of times per week f 5 or more 2 4 2 3 3 2 6 1 4 0 3

a. Find the mode for this distribution.

b. Find the median for the distribution.

c. Explain why you cannot compute the mean number of times using the data in the table.