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Define the following:(i) Mean Deviation(ii) Standard Deviation(iii) Coefficient of Variation |
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Answer» (i) Mean Deviation: The mean of the absolute deviations of a data from its mean is called mean deviation and it is denoted by MD. (ii) Standard Deviation : Standard deviation is the positive square root of the mean of the squares of the deviations measured from the mean. It is denoted by ‘s’. (iii) Coefficient of Variation : Coefficient of Variation is the percentage measure of standard deviation in relation to the mean., i.e., Coefficient of Variation = \(\frac{s}{x¯}\) × 100. |
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