36. Find the mean of the following data :
Classes
Frequency
0 - 20
20
20-40
35
40-60
52
60 - 80
44
80 - 100
38
100 - 120
31
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Answered by
3
36. Find the mean of the following data :
Classes
Frequency
0 - 20
20
20-40
35
40-60
52
60 - 80
44
80 - 100
38
100 - 120
31
Answered by
0
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