A) M.D.\[=\frac{\sum d}{\sum f}\]
B) M.D.\[=\frac{\sum fd}{\sum f}\]
C) M.D.\[=\frac{\sum f|d|}{\sum f}\]
D) M.D.\[=\frac{\sum f}{\sum f|d|}\]
Correct Answer: C
Solution :
It is obvious.
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