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Mathematics
Mathematics
Problem
11. Find the mean deviation about median for the following data :
Marks
0
−
10
0-10
0
−
10
10
−
20
10-20
10
−
20
20
−
30
20-30
20
−
30
30
−
40
30-40
30
−
40
40
−
50
40-50
40
−
50
50
−
60
50-60
50
−
60
Number of <br> Girls
6
8
14
16
4
2
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