Solution:Per capita income, also known as income per person, is the mean income of the people in an economic unit such as a country. Per capita income is often used to measure a country's standard of living.Poverty Ratio: Ratio of number of people whose income falls below poverty sine, taken as half the medium house hold income of total population.
National Income: Total amount of money earned within a country.
Unemploye rate: It is defined most basically as the percentage of total labour force that is unemployed but actively seeking employment and willing to work.