ANSWER TO FRAME 32.
First order the data low to high:
31, 37, 37, 37, 38, 40, 40, 40, 43, 45
The mean is X = ΣX = 388 = 38.8 (This is a sample, not a population).
n
10
The median is (38 + 40) /2 * 39. (There are an even number of observations.)
The modes are 37 and 40 because both occur three times.
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