15. Low - income countries and upper middle - income countries are informally grouped as the middle - income countries.
O. True
O. False
16. The PPP gives an overall index of economic development. It gives a rough ability to make comparisons on the issue of economic welfare - much more than just using GDP statistics. PPP is important because it helps us to know how a country is doing. It is a better measure of a country's progress.
O. True
O. False
17. Health as measured by life expectancy, undernourishment, and literacy.
O. True
O. False
18.
O. True
O. False
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