Math, asked by dharshukutty28, 3 months ago

Calculate the arithmetic mean of
marks frequency
20-30 4
30-40 7
40-50 5
50-60 12
60-70 18
70-80 13
80-90 6
90-100 5

Answers

Answered by aiyariyaking

1

Answer:

add all and divide by number of frequency

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