For a frequency distribution mean deviation from mean is computed by

1.	For a frequency distribution mean deviation from mean is computed by [DCE 1994]
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.\[=\frac{\sum f}{\sum f\|d\|}\]
Answer» D. M.D.\[=\frac{\sum f}{\sum f\|d\|}\]

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For a frequency distribution mean deviation from mean is computed by [DCE 1994]

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