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Measures of Dispersion — Economics STD 11 Commerce — Question

CBSE BoardEnglish MediumSTD 11 CommerceEconomicsMeasures of Dispersion3 Marks
Question
Why are '+' and '-' signs ignored while taking deviations from mean or median?
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Answer

The algebraic signs are ignored while taking deviations from mean or median because the sum of deviations taken from mean is zero and from median is very close to zero. Therefore, to study variation, the '+' and '-' signs are ignored.

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