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Measures of Central Tendency — Economics STD 11 Commerce — Question

CBSE BoardEnglish MediumSTD 11 CommerceEconomicsMeasures of Central Tendency1 Mark
Question
What is the sum of deviations from mean in a series?
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Answer

The sum of deviations of items from mean in a series is always equal to zero. Symbolically.$\Sigma(\text{X}-\overline{\text{X}})=0$

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