Difference between personal and national income ?Difference between real and nominal GDP ?Quantity theory of money ?

Difference between Personal and National Income:

• Personal Income: This is the total income received by individuals of a country from all possible sources before direct taxes are deducted. It includes wages, salaries, interest, dividends, etc.
• National Income: This is the total value of all goods and services produced in a country over a period of time. It includes the total income earned by a nation's people, including labor and capital investment.

Difference between Real and Nominal GDP:

• Real GDP: This is a macroeconomic measure of the value of economic output adjusted for price changes (i.e., inflation or deflation). This adjustment transforms the money-value measure, nominal GDP, into an index for quantity of total output.
• Nominal GDP: This is a gross domestic product (GDP) figure that has not been adjusted for inflation. It includes all of the changes in market prices that have occurred during the current year due to inflation or deflation.

Quantity Theory of Money:

• The Quantity Theory of Money is a theory that suggests a change in money supply will directly affect price levels in the long run, and have no real effect on output. The theory also suggests that an increase in money supply will lead to inflation. The formula for this theory is MV = PT, where M is the money supply, V is the velocity (the number of times per year the average dollar is spent), P is the price of goods and services, and T is the amount of transactions.