English, asked by ss2072105, 5 months ago

(b) Calculate Arithmetic mean for the following:
Marks
20-30
30-40
40-50
50-60
60-70
70-80
No.of students
5
8.
12
15 please correct answer
6
4

Answers

Answered by snigdhasen723

1

Answer:

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Explanation:

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