Question

Below is a class distribution table for the weights(in kg) of athletes who registered for a wrestling competition.

Weight Frequency

70-74 4

75-79 7

80-84 11

85-89 8

Find the mean weight of the wrestlers who will be competing in the tournament. Write your complete solution below

Answer 1

$mu=\frac{72*4+77*7+82*11+87*8}{4+7+11+8}=\frac{2425}{30}=$ 80.33.