Question

6, find the mean marks at 30 students of
сlass IX in Mathematics as given the data below
10 96 50 70 80 70 36 40 56 60
20 95 56 92 70 36 40 50 60 60
36 40 60 88 72 40 92 50 70 88

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Answer 1

Answer:

Make the table , then total the frequency , mean and then apply the formula of mean, mean = sigma fixi/sigma fi