write any 5 issues that are considered while measuring C.P.I. ?
Answers
Answer:
Three problems with the CPI deserve mention: the substitution bias, the introduction of new items, and quality changes. ... The first problem with the CPI is the substitution bias. As the prices of goods and services change from one year to the next, they do not all change by the same amount.
Answer:
While the CPI is a convenient way to compute the cost of living and the relative price level across time, because it is based on a fixed basket of goods, it does not provide a completely accurate estimate of the cost of living. Three problems with the CPI deserve mention: the substitution bias, the introduction of new items, and quality changes. Let's examine each of these in detail.
SUBSTITUTION BIAS
The first problem with the CPI is the substitution bias. As the prices of goods and services change from one year to the next, they do not all change by the same amount. The number of specific items that consumers purchase changes depending upon the relative prices of items in the fixed basket. But since the basket is fixed, the CPI does not reflect consumer's preference for items that increase in price little from one year to the next. For example, if the price of back rubs in Country B jumped to $20 in time period 4 while the cost of bananas remained fixed at $3, consumer would likely purchase more bananas and fewer back rubs. This intuitive phenomenon of consumers substituting purchase of low priced items for higher priced items is not accounted for by the CPI.