what are formulas for mean deviation
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Mean= sigma fixi/sigma fi
=a+sigma fidi/sigma fi
=a+sigma fiui/sigma fi *h
=a+sigma fidi/sigma fi
=a+sigma fiui/sigma fi *h
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The average of these numbers (6%5 ) is 1. 2 which is mean deviation also called mean absolute deviation, If is used as measure of dispersion where the number of values or quantities is small, otherwise standard deviation is used.
plz mark as brilliant answer please please
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