Quality of life of the people is another index to measure the standard of living of the people in an economy. It is influenced by national and per capita income of the people. Many other factors like consumption, output, health, environment, education, freedom, security, non-violence peaceful atmosphere etc. also influence human welfare directly or indirectly.
In other words, none of the factors alone determines the welfare of the people. At the same time, we should note that National Income is not itself the single representative factor of welfare.
It is as such necessary that all the determinants of welfare should be combined together to measure the quality of life index. But it is not possible that every variable should be accounted for because of conceptual and statistical difficulties.
It is, therefore, said that an index comprising of certain selected social factors be made to determine the quality of life index. For example Human Development Index (HID) has been prepared under United Nations Development Programme (UNDP).
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In fact, they make an attempt to measure quality of life and we should make reference to it towards the end. At the same time, we should remember that these indices were developed in the international context. They were used for ranking different countries according to its numerical value of achievement in descending order.