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Measures of Central Tendency — Economics STD 11 Commerce — Question

CBSE BoardEnglish MediumSTD 11 CommerceEconomicsMeasures of Central Tendency1 Mark
Question
When is Arithmetic mean and weighted mean equal?
✓

Answer

If the weights of all the observations are equal i.e. $w_1=w_2=w_3, \ldots=w_n=w$ then the weighted A.M is equal to simple A.M i.e. $\overline{ x }_{ w }=\overline{ x }$.

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