Lecture notes
Intro to Marco Economics notes
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These notes are filled with definitions and examples of key macro economic components.
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Introductory Macroeconomics: Unit 1Overview
1. Introduction to Macroeconomics
Definition: Macroeconomics is the branch of economics that studies the economy as a whole,
focusing on aggregate measures and broader economic trends.
Purpose: To understand and analyse economic phenomena like inflation, unemployment,
economic growth, and fiscal and monetary policies.
2. Key Concepts and Definitions
a. Gross Domestic Product (GDP)
Definition: The total monetary value of all final goods and services produced within a
country's borders in a specific time period.
Components:
- Consumption (C): Spending by households on goods and services.
- Investment (I): Spending on capital goods that will be used for future production.
- Government Spending (G): Expenditures by the government on goods and services.
- Net Exports (NX): Exports minus imports (Exports - Imports).
Example: If a country produces $5 trillion in goods and services in a year, its GDP is $5
trillion.
b. GDP Growth Rate
Definition: The percentage increase in GDP from one period to the next.
Example: If GDP grows from $5 trillion to $5.2 trillion, the growth rate is the final value
subtracted by the original GDP value, divided by the original GDP value x100 to convert to
percentage. In this case, the growth rate is 4%
c. Unemployment Rate
Definition: The percentage of the labor force that is unemployed and actively seeking work.
Example: If a labour force has 100 million people and 5 million are unemployed, the
unemployment rate is the number of unemployed over the labour force, x100 to be in
percentage. This means the unemployment rate is 5%.
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