advantages of quartile deviation
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What is mean deviation and why is quartile deviation better than mean deviation?
Q3-q1
Information is not sufficient to find mean deviation and standard deviation.
we calculate standard deviation to find the avg of the difference of all values from mean.,
There are many:Range,Inter-quartile range,Percentile rangesMean absolute deviation from the mean or medianVarianceStandard deviationStandardised deviation