In: Statistics and Probability
(a) (i) three uses of index numbers seperated by comma are given bow
Index numbers are used to measure the difference in relative changes from time to time, Index numbers are used to calculate dearness allowance of employees, Index numbers are helpful in forecasting future economic trends, index numbers of import prices and export prices are used to measure the changes in the trade of a country.
2 limitations are
Index numbers come out as a result of samples which are intentional sometimes and hence there are chances of errors
There are various formulae for calculating index numbers and each of them suffers formulae error.