The table below shows the distribution of the masses of 100 adults measured to the nearest kilogram. Mass(kg) 50-59 60-69 70-79 80-89 90-99 100-109 Frequency(f) 5 9 28 33 17 8 Calculate the i. Variance and standard deviation ii. Coefficient of variation

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The table below shows the distribution of the masses of 100 adults measured to the
nearest kilogram.

Mass(kg) 50-59 60-69 70-79 80-89 90-99 100-109
Frequency(f) 5 9 28 33 17 8

Calculate the
i. Variance and standard deviation

ii. Coefficient of variation

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