Data was collected about the number of text messages a sample of college students received in the last day.  In this particular sample, most students received few text messages, but a small number of students received a very large number of text messages.   Two measures of center were computed for this sample:  15.6 and 20.2.   One of these measures is the mean and one is the median.  Which measure must be the median?    1 The median is 20.2 because the distribution of number of text messages would be skewed to the left. 2 The median is 20.2 because the distribution of number of text messages would be skewed to the right. 3 The median is 15.6 because the distribution of number of text messages would be skewed to the left. 4 The median is 15.6 because the distribution of number of text messages would be skewed to the right.

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