Question

mean deviation of the marks obtained by children is 8 marks.
Illustration 11 : From the following information of fortnight sale of two wheelers by 30 dealers of
a city, find the mean deviation of number of two wheelers sold'.
No. of two wheelers
12-16
17-21
22 - 26
27 - 31
32 - 36
No. of dealers
2
3
14.
8
3
No. of tu​

Answer 1

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