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The mean of the following data is 42, find the missing frequencies x and y if the sum of the frequencies is 100. Class interval 0−10 10−20 20−30 30−40 40−50 50−60 60−70 70−80 Frequency 7 10 x 13 y 10 14 9

Answer» The mean of the following data is 42, find the missing frequencies x and y if the sum of the frequencies is 100.



























Class interval 0−10 10−20 20−30 30−40 40−50 50−60 60−70 70−80
Frequency 7 10 x 13 y 10 14 9


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