A simple random sample of 10 people were asked how many first cousins they have. The results are listed. 10 , 19 , 20 , 13 , 13 , 2 , 10 , 8 , 25 , 10 What is the mean number of first cousins for this sample?
Answer
A
11 point 5
B
10
C
13
D
13 point 5
Explanation
Add the 10 values to get 130, then divide by the 10 people in the sample: 130 ÷ 10 = 13. The mean number of first cousins is 13, which is choice C.
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