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Tamil Nadu Board of Secondary EducationHSC Commerce Class 12

Calculate Fisher’s index number to the following data. Also show that it satisfies Time Reversal Test. Commodity 2016 2017 Price (Rs.) Quantity (kg) Price (Rs.) Quantity (kg) Food 40 12 65 14 Fuel - Business Mathematics and Statistics

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Question

Calculate Fisher’s index number to the following data. Also show that it satisfies Time Reversal Test.

Commodity 2016 2017
Price (Rs.) Quantity (kg) Price (Rs.) Quantity (kg)
Food 40 12 65 14
Fuel 72 14 78 20
Clothing 36 10 36 15
Wheat 20 6 42 4
Others 46 8 52 6
Chart
Sum

Solution

Commodity 2016
(Base year)
2017
(Current year)
p0q0 p0q1 p1q0 p1q1
p0 q0 p1 q1
Food 40 12 65 14 480 560 780 910
Fuel 72 14 78 20 1008 1440 1092 1560
Clothing 36 10 36 15 360 540 60 540
Wheat 20 6 42 4 120 80 252 168
Others 46 8 52 6 68 276 416 312
Total `sum"p"_0"q"_0` = 2336 `sum"p"_0"q"_1` =2896 `sum"p"_1"q"_0` = 2900 `sum"p"_1"q"_1` = 3490

Fisher’s Price 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`

= `sqrt((2900 xx 3490)/(2336 xx 2896)) xx 100`

= `sqrt((10121000)/(6765056)) xx 100`

= `sqrt(1.4961) xx 100`

= `1.2232 xx 100`

= 122.32

Time Reserved Test: P01 × P10 = 1

= `sqrt((sum"p"_1"q"_0 xx sum"p"_1"q"_1 xx sum"q"_1"p"_0 xx sum"q"_0"p"_0)/(sum"p"_0"q"_0 xx sum"p"_0"q"_1 xx sum"p"_1"q"_1 xx sum"p"_0"p"_1))`

= `sqrt((2900 xx 3490 xx 2896 xx 2336)/(2336 xx 2896 xx 3490 xx 2900)`

= 1

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Chapter 9: Applied Statistics - Exercise 9.2 [Page 220]

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Samacheer Kalvi Business Mathematics and Statistics [English] Class 12 TN Board
Chapter 9 Applied Statistics
Exercise 9.2 | Q 19 | Page 220
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