Question
Calculate a Quantity Index number of g the given data.
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Answer

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where, $\Sigma q_0=$ Sum total of all the commodities of the base year $\Sigma q_1$ Sum total of all the commodities of the current year Quantity Index Number $Q _{01}=\frac{\Sigma q_1}{\Sigma q_0} \times 100$
$ =\frac{300}{200} \times 100$
$=150 $
Hence, $Q_{01}=150$

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