Define the following : (i) Mean Deviation (ii) Standard Deviation… - Vidyadip

Question

Define the following :
$(i)$ Mean Deviation $(ii)$ Standard Deviation $(iii)$ Coefficient of Variation

✓

Answer

$(i)$ Mean Deviation: The mean of the absolute deviations of a data from its mean is called 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}X$100.

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