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Tamil Nadu Board of Secondary EducationHSC Commerce Class 12

The following are the group index numbers and the group weights of an average working class family’s budget. Construct the cost of living index number: Groups Food Fuel and Lighting Clothing Rent M - Business Mathematics and Statistics

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Question

The following are the group index numbers and the group weights of an average working class family’s budget. Construct the cost of living index number:

Groups Food Fuel and
Lighting
Clothing Rent Miscellaneous
Index Number  2450 1240 3250 3750 4190
Weight 48 20 12 15 10
Chart
Sum

Solution

Group Weight
(W)
Index Number
(I)
WI
Food 48 2450 117600
Fuel and Lighting 20 1240 24800
Clothing 12 3250 39000
Rent 15 3750 56250
Miscellaneous 10 4190 41900
Total 105   279550

Cost of living index number = `(sum"WI")/(sum"W")`

= `279550/105`

= 2662.38

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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 20 | Page 220
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