Question

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

Answer 1

Step-by-step explanation:

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