Question

find the mean marks of students for the following distribution
Marks No. of student
0-10 3
10-20 5
20-30 7
30-40 10
40-50 12
50-60 15
60-70 12
70-80 6
80-90 2
90-100 8
100-110 0​

Answer 1

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Refer to the given attachment.

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