Twelve randomly chosen students were asked how many times th

Twelve randomly chosen students were asked how many times they had missed class during a certain semester, with this result: 2, 1, 5, 1, 1, 3, 4, 3, 1, 1, 5, 18. For this sample, which measure of center is least representative of the \"typical\" student?

Mean

Median

Mode

Midrange

Solution

Data arranged in ascending order: 1,1,1,1,1,2,3,3,4,5,5,18

Mean = (Sum of all values)/12 = 3.41667

Median = (2+3)/2 = 2.5

Mode = Maximum occuring value = 1

Midrange = (1+18)/2 = 9.5

The least representative of the \'typical\' student is the midrange, as the rest of the values are close together.