Question

Use the following frequency distribution to determine the midpoint of the second class.

Answer 1

Class         Frequency    Mid-point
13-15           7            13+15/2=20.516-18           4            16+18/2=1719-21           3            19+21/2=2022-24           5            22+24/2=2325-27           7            25+27/2=2628-30           7            28+30/2=29

(16+18)/2 = 17
So, the answer is A (17).