Question

Which of the following best explains why the mean is NOT an appropriate indicator of how much time Mary spends exercising on a typical day?

A. There is more than one mean.
B. The mean is not an integer value.
C. The mean is skewed by the days Mary did not exercise.
D. The set of data points is too small.

Answer 1

C. The mean is skewed by the days Mary did not exercise.

Explanation:

If Mary does not exercise for, say, a month then the mean will be very low and is not an indicator of how much time Mary spends exercising on an average