Measures of dispersion — Statistics STD 11 Commerce — Question
Gujarat BoardEnglish MediumSTD 11 CommerceStatisticsMeasures of dispersion1 Mark
Question
State the most useful measure of dispersion and write its definition.
✓
Answer
The most useful measure of dispersion is ‘standard deviation’. Its definition is as follows:
The positive square root of the average value of sum of squares of deviations of observations from the mean is called the standard deviation. It is denoted by the symbol ‘s’.
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