ECON-1007EL Chapter Notes - Chapter 19: Nominal Interest Rate, Potential Output

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Chapter 19: What Macroeconomics Is All About
Definitions
Macroeconomics
The study of the determination of economic aggregates, such as total
output, total employment, the price level, and the rate of economic growth.
Nominal National Income
Total national income measured in current dollars. (Current-Dollar
National Income)
Real National Income (Y)
National Income measured in constant (base-period) dollars. It changes
only when quantities change.
Recession
A fall in the level of real GDP. Often defined precisely as two consecutive
quarters in which real GDP falls.
Business Cycle
Fluctuations of national income around its trend value that follow a more
or less wavelike pattern.
Potential Output (Y*)
(Potential GDP)
The real GDP that the economy would produce if its productive resources
were fully employed.
Output Gap
Actual output minus potential output, Y-Y*
Recessionary Gap
A situation in which actual output is less than potential output, Y<Y*
Inflationary Gap
A situation in which actual output exceeds potential output, Y>Y*
Employment
The number of persons 15 years of age or older who have jobs
Unemployment
The number of persons 15 years of age or older who are not employed and
are actively searching for a job
Unemployment Rate
Unemployment expressed as a percentage of the labour force
Labour Productivity
The level of real GDP divided by the level of employment (or total hours
work)
Price Level
The average level of all the prices in the economy, expressed as an index
number
Inflation
A rise in the average level of all the prices (the price level)
Consumer Price Index
(CPI)
An index of the average prices of goods and services commonly bought by
households
Purchasing Power of
Money
The amount of goods and services that can be purchased with a unit of
money
Interest Rate
The price paid per dollar borrowed per period of time, expressed either as a
proportion (e.g., 0.06) or as a percentage (e.g., 6%)
Nominal Interest Rate
The price paid per dollar borrowed per period of time
Real Interest Rate
The nominal rate of interest adjusted for the change in the purchasing
power of money. Equal to the nominal interest rate minus the rate of
inflation
Exchange Rate
The number of units of domestic currency required to purchase one unit of
foreign currency
Foreign Exchange
Foreign currencies that are traded on the foreign-exchange market
Foreign-Exchange Market
The market in which different national currencies are traded
Depreciation
A rise in the exchange rate it takes more units of domestic currency to
purchase one unit of foreign currency
Appreciation
A fall in the exchange rate it takes fewer units of domestic currency to
purchase one unit of foreign currency
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Document Summary

The study of the determination of economic aggregates, such as total output, total employment, the price level, and the rate of economic growth. Nominal national income total national income measured in current dollars. (current-dollar. Real national income (y) national income measured in constant (base-period) dollars. A fall in the level of real gdp. Often defined precisely as two consecutive quarters in which real gdp falls. Fluctuations of national income around its trend value that follow a more or less wavelike pattern. The real gdp that the economy would produce if its productive resources were fully employed. A situation in which actual output is less than potential output, yy* The number of persons 15 years of age or older who have jobs. The number of persons 15 years of age or older who are not employed and are actively searching for a job.

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