Question

For comparing the developmental level of two countries, the total income method is not a good one. Explain.

Answer 1

For comparison between countries, total income is not such a useful measure because countries have different populations, comparing total income will not tell us what an average person is likely to earn.
Hence, we compare the average income which is the total income of the country divided by the total population. The developmental level of two counties are compared by their per capita Income.