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Frequency d) Calculate quartile deviations for the following distributions of ages of 800 persons: 35-40 40-45 180 150 Age 20-25 25-30 70 30-35 100 No.

Frequency d) Calculate quartile deviations for the following distributions of ages of 800 persons: 35-40 40-45 180 150 Age 20-25 25-30 70 30-35 100 No. 50 e) Find the standard deviation for the following data: 45-50 120 50-55 70 55-60 60

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