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References: Measuring the Economy

  1. Gross Domestic Product - Wikipedia - Explains how GDP is calculated using expenditure, income, and production approaches, plus the distinction between nominal and real GDP.

  2. Business Cycle - Wikipedia - Covers the recurring pattern of expansion and contraction in economic activity, including peaks, troughs, recessions, and recoveries.

  3. Aggregate Demand - Wikipedia - Describes the total demand for goods and services in an economy at various price levels, and the factors that shift the aggregate demand curve.

  4. Macroeconomics (11th Edition) - N. Gregory Mankiw - Worth Publishers - Leading macroeconomics textbook with thorough coverage of GDP measurement, business cycles, and the aggregate demand-aggregate supply model.

  5. GDP: A Brief but Affectionate History - Diane Coyle - Princeton University Press - Engaging short book on how GDP was invented, what it measures well, what it misses, and why it matters for economic policy.

  6. Gross Domestic Product - Concise Encyclopedia of Economics - Expert explanation of GDP concepts, measurement methods, and the limitations of GDP as a measure of economic well-being.

  7. Real Gross Domestic Product - Federal Reserve Economic Data (FRED) - Inflation-adjusted GDP data for the United States, showing the actual growth of economic output over time.

  8. Real GDP Per Capita - Federal Reserve Economic Data (FRED) - GDP divided by population, the best single measure of average living standards and how they change over time.

  9. GDP Growth Rate - Federal Reserve Economic Data (FRED) - Quarterly GDP growth rates showing the pace of economic expansion and contraction, essential for identifying business cycle phases.

  10. World GDP Data - World Bank - International GDP data allowing comparison of economic output across countries and tracking of global economic growth trends.