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Tamil Nadu Board of Secondary EducationHSC Commerce Class 12

Write note on Fisher’s price index number

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Question

Write note on Fisher’s price index number

Sum
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Solution

Fisher defined a weighted index number as the geometric mean of Laspeyre’s index number and Paasche’s Index number

`"P"_01^"F" = sqrt((sum"p"_1"q"_0 xx sum"p"_1"q"_1)/(sum"p"_0"q"_0 xx sum"p"_0"q"_1)) xx 100`

The Fisher-price index number is also known as the “ideal” price index number.

This requires more data than the other two index numbers and as a result, may often be impracticable.

But this is a good index number because it satisfies both the time-reversal test and factor reversal test.

i.e `"P"_01^"F" xx "P"_10^"F"` = 1

And

`"P"_01^"F" xx "Q"_01^"F" = (sum "p"_1"q"_1)/(sum"p"_0"q"_0)`

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Chapter 9: Applied Statistics - Exercise 9.2 [Page 219]

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Samacheer Kalvi Business Mathematics and Statistics [English] Class 12 TN Board
Chapter 9 Applied Statistics
Exercise 9.2 | Q 6 | Page 219
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