Find the mean of the following data:
Class 40-50 50-60 60-70 70-80 80-90 90-100
Frequency 10 25 28 12 10 15
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q- Find the mean of the following data:
Class 40-50 50-60 60-70 70-80 80-90 90-100
Frequency 10 25 28 12 10 15
ans - 68.2. provided in mage
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