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For a frequency distribution mean deviation from mean is computed by A. M.D. = \(\frac{\Sigma f}{\Sigma f |d|}\) B. M.D. = \(\frac{\Sigma d}{\Sigma f}\) C. M.D. = \(\frac{\Sigma fd}{\Sigma f}\) D. M.D. = \(\frac{\Sigma f |d|}{\Sigma f}\) |
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Answer» The general formula of Mean is \(\bar x = \frac{\Sigma x_if_i}{\Sigma f_i}\) For mean deviation, d = (x-mean) M.D = \(\frac{\Sigma fd}{\Sigma f}\) |
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