A simple random sample of 10 people was asked how many first cousins they have. The results are listed. 10 , 19 , 20 , 13 , 13 , 2 , 10 , 8 , 25 , 10 What is the median number of first cousins for this sample?

Put the cousin counts in order: 2, 8, 10, 10, 10, 13, 13, 19, 20, 25. With 10 values, the median is the average of the 5th and 6th values: (10 + 13) ÷ 2 = 11.5. The median is 11.5 first cousins, choice C.

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