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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.

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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.

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Arranging the data in ascending order, we get 54, 57, 59, 60, 62, 62, 62, 65, 70, 75, 78, 84

(b) Since, mean = 65.6 kg

∴ 4 people have weight above mean weight.

(c) Range = Highest weight – Lowest weight

= (84 – 54) kg = 30 kg

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