Question

For the two frequency distributions given below, the mean calculated from the first was 25.4 and that from the second was 32.5. Find values of x and y.
Class 10-20
20-30
30-40
40-50
50-60
Distribution I Frequency
20
15
10
x
y
Distribution II Frequency
4
8
4
2x
y​

Answer 1

Answer:

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