Measures of dispersion — Statistics STD 11 Commerce — Question
Gujarat BoardEnglish MediumSTD 11 CommerceStatisticsMeasures of dispersion1 Mark
Question
Write the definition of variance.
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Answer
The average value of sum of squares of deviations of observations from the mean is called the variance. It denoted by the symbol s. $S^{2}=\frac{\sum(x-\bar{x})^{2}}{n}$
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