in a class test ,marks obtained by 120 students are given in the following frequency distribution the mean is 69 find x and y
C.I F.I
0-10 1
10-20 3
20-30 7
30-40 10
40-50 15
50-60 X
60-70 9
70-80 27
80-90 18
90-100 Y
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Please find below the solution to the asked query:
Hope this information will clear your doubts about the topic.
If you have any more doubts, just ask here on the forum and our expert will try to help you out as soon as possible.
Regards