What are these concepts economic help me?

Question

concepts of these terms:

- Macroeconomics

- Average and Median

-Gross National Product

-Tools Economists and Government use to Control and Manipulate the Economy

Answer 1

Macroeconomics

Macroeconomics is a branch of economics that deals with the performance, structure, and behavior of a national or regional economy as a whole. Macroeconomists study aggregated indicators such as GDP, unemployment rates, and price indices to understand how the whole economy functions. Macroeconomists develop models that explain the relationship between such factors as national income, output, consumption, unemployment, inflation, savings, investment, international trade and international finance.

http://en.wikipedia.org/wiki/Macroeconom...

Average and Median

These terms are best explained with an example: Suppose 19 paupers and 1 billionaire are in a room. Everyone removes all the money from their pockets and puts it on a table. Each pauper puts $5 on the table; the billionaire puts $1 billion  there. The total is then $1,000,000,095. If that money is divided equally among the 20 people, each gets $50,000,004.75. That amount is the average amount of money that the 20 people brought into the room.

In contrast, the median is the number separating the higher half of a sample from the lower half of the sample (50th percentile). Hence, the median amount is $5, since one may divide the group into two groups of 10 people each, and say that everyone in the first group brought in no more than $5, and each person in the second group brought in no less than $5. In a sense, the median is the amount that the typical person brought in. By contrast, the mean is not at all typical, since nobody in the room brought in an amount approximating $50,000,004.75.

http://en.wikipedia.org/wiki/Mean

http://en.wikipedia.org/wiki/Median

Gross National Product

The Gross National Product (GNP) is the total market value of all the goods and services produced by a nation during a specified period.

http://en.wiktionary.org/wiki/gross_nati...

Tools Economists and Government use to Control and Manipulate the Economy

- Interest rates (http://en.wikipedia.org/wiki/Federal_fun...

- Taxes (http://en.wikipedia.org/wiki/Tax)

- Employment policies (http://en.wikipedia.org/wiki/Unemploymen...