Consumer Price Index (CPI) or Cost of Living Index Number, Construction, Methods | Index Numbers


🚩Timestamps:-

00:07 Session Agenda

00:32 to be discussed in next video…

01:23 Consumer Price Index or Cost of Living Index Number

06:54 CONSTRUCTION OF CONSUMER PRICE INDEX

11:46 METHODS OF CONSTRUCTING CONSUMER PRICE INDEX (CPI)

12:07 Concluding Remarks

Learning Outcomes:-

Through this module, you will gain understanding on:-

1.   Consumer Price Index or Cost of Living Index Number

2.   CONSTRUCTION OF CONSUMER PRICE INDEX

3.   METHODS OF CONSTRUCTING CONSUMER PRICE INDEX (CPI)

4.    (i) Aggregative Expenditure Method

5.   (ii) Family Budget Method.

6.   IMPORTANCE OF THE CONSUMER PRICE INDEX OR COST OF LIVING INDEX

7.   DIFFICULTIES IN THE CONSTRUCTION OF CONSUMER PRICE INDEX

Consumer Price Index or Cost of Living Index Number (representative of consumption expenditure in an economy)

So far we have been focusing on general price indices. But these indices do not precisely explain how the change in general price level affects the cost of living of the various classes of society. This is because different classes of people consume different goods and services. Accordingly, the change in prices affect them differently.

·        To know the effects of changing prices on the living of different classes of society, we need a special type of price index, called Consumer Price Index or Cost of Living Index Number.

·        The consumer price index is the index number which measures the average change in prices paid by the specific class of consumers for goods and services consumed by them in the current year in comparison with base year. Change in the price level affects the cost of living of the concerned class of consumers. Accordingly, consumer price indices are also called cost of living indices.

 

In India, the consumer price indices are mainly constructed for the following consumer groups:

 (i) Industrial Workers

 (ii) Urban-Non Manual Employees (UNME), and

(iii) Agricultural Labourers

 

CONSTRUCTION OF CONSUMER PRICE INDEX

 (1) Selection of the Consumer Class:

Consumers are classified into various classes like industrial labour, government employees agricultural labour, teachers, etc. We should select the class of consumer according to the requirement of our study.

 

(2) Information about the Family Budget:

After the decision about the group, a sample of persons should be selected from the group and following information about their family budgets should be obtained: (i) Commodities which they consume. (ii) Quantity of consumption. (iii) Prices of the concerned goods and services. (iv) Money spent on these goods and services. The items which are generally consumed may be classified in groups like (i) Food, (ii) Clothing, (iii) Fuel and light, (iv) House rent, (v) Education, health and sanitation, (vi) Miscellaneous.

 

(3) Choice of Base Year:

The base year should be the year of economic stability. It should not be too distant from the current year.

 

(4) Information about Prices:

The retail prices of selected items/commodities should be collected from the region where the group of selected person lives and makes the purchases.

 

(5) Weightage:

The importance of various items for different classes of people is different. Therefore, the selected items should be given weights according to their relative importance. As discussed earlier, there are two ways of according weights:

(i) Quantity Weights: These weights are given in proportion the quantities consumed in the base period.

 (ii) Expenditure Weights: These weights are given in proportion to the total expenditure on the items consumed in the base period.

 

METHODS OF CONSTRUCTING CONSUMER PRICE INDEX (CPI)

 (i) Aggregative Expenditure Method

(ii) Family Budget Method.

IMPORTANCE OF THE CONSUMER PRICE INDEX OR COST OF LIVING INDEX

(1) Formulation of Price Policy:

The consumer price indices are used by government to frame policies on prices. On the basis of these indices, government decides whether the prices are to be controlled, dual price policy should be adopted or public distribution system is to be introduced, etc. Also, government policies like rent control and taxation, general economic and fiscal policies etc. are framed on the basis of the consumer price index numbers to a large extent.

 

(2) Wage Adjustment:

Cost of living index numbers are used as basis for the wage adjustments. The rates of dearness allowances are decided by the government on the basis of these indices. These indices are also used for wage contracts and wage agreements of the workers.

 

(3) Measurement of Real Value:

These index numbers are used to measure the real value of the rupee or its purchasing power and real income (or revenue), etc.

·        The purchasing power of money is the amount of goods and services that can be bought with a unit of currency. It's also known as a currency's buying power.

·        Purchasing power can decrease over time due to inflation, which causes prices to rise. For example, if you had one unit of currency in the 1950s, you could buy more items than you can today.

 

(4) Analysis of Markets:

The consumer price indices are also used for the analysis of the market of specific commodities for their demand and supply.

 

 (5) National Income Deflator:

These indices are also used as deflators of national income. Accordingly, real change in national income is estimated.

·        The GDP deflator is a statistical tool that measures inflation and deflation in an economy by comparing the value of goods and services produced in a given year to the value of the same goods and services produced in a base year. The GDP deflator is calculated by dividing the nominal GDP by the real GDP and multiplying the result by 100. The nominal GDP is calculated using the current year's prices, while the real GDP is calculated using the base year's prices.

·        The GDP deflator is also known as the implicit price deflator. It can be used to study economic phenomena, expenditure patterns, and changes in demand and consumption. The GDP deflator is often used in conjunction with the Consumer Price Index (CPI) to measure inflation. (मुद्रास्फीति, महंगाई)

 

DIFFICULTIES IN THE CONSTRUCTION OF CONSUMER PRICE INDEX

 (1) Difference in the Standards of Living:

Consumption pattern of different classes of consumers are different and therefore, have different living standards. Thus, there cannot be one consumer price index number for different classes of society.

 

 (2) Difference in Prices:

The price indices are constructed on the basis of retail prices. But the retail prices vary from place to place and even at the same place from shop to shop. As such it is very difficult to find a representative price for the calculation of consumer price index.

 

(3) Difference in the Proportion of Expenditure:

All the members of any particular group do not spend on various items of consumption in same ratio and even one person does not spend on various commodities in the same ratio at two different periods of time. A consumer's purchase ratio depends upon his/her taste, habits, etc. Accordingly, it is difficult to construct a cost of living index that truly reflects a change in the cost of living over time.

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Consumer Price Index or Cost of Living Index Number, Price Index or Cost of Living Index Number, CONSTRUCTION OF CONSUMER PRICE INDEX, METHODS OF CONSTRUCTING CONSUMER PRICE INDEX (CPI) | Index Numbers | 11th Commerce | by @statomics11comm

 

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