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Calculate Mean Deviation from the following table using :
(i) Actual Mean Method
(ii) Assumed Mean Method
(iii) Step Deviation Method
Profits of Companies (Rs. in lakhs)
Number of
Class-intervals
Companies frequencies
10 – 20
5
20 – 30
8
30 – 50
16
50 – 70
70 – 80
3
40
