The number of patients treated each day by a dentist during a 20-day period is shown in the following stem-and-leaf diagram.
a. Find the median number of patients.
b. On eight of these 20 days, the dentist arrived late to collect their son from school. If they decide to use their average number of patients as a reason for arriving late, would they use the median or the mean? Explain your answer.
c. Describe a situation in which it would be to the dentist’s advantage to use a mode as the average.
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