Q55 of 91 Page 72

The following are weights (in kg) of 12 people.

70, 62, 54, 57, 62, 84, 75, 59, 62, 65, 78, 60


A. Find the mean of the weights of the people.


B. How many people weigh above the mean weight?


C. Find the range of the given data.

(A) Mean =


Sum of weights = 70 + 62 + 54 + 57 + 62 + 84 + 75 + 59 + 62 + 65 + 78 + 60


= 788


Number of people = 12


Mean = = 65.66


(B) Mean weight = 65.66


People above mean weight are 70, 75, 78, 84


4 peoples are above mean weight


(C) Range = Highest weight – Lowest weight


Highest weight = 84


Lowest weight = 54


= 84 – 54 = 30


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