Forex glossary
Gross Domestic Product (GDP)
The value of final goods and services produced within a territory over a specified period. Nominal GDP uses current prices and real GDP adjusts for price changes; the level, growth rate and annualized growth rate are different measures.
Illustrative example
How does it work in practice?
In a hypothetical comparable series of seasonally adjusted real GDP, two successive quarters have levels of 100 and 102 million PLN in constant prices. Growth is 2% quarter on quarter; an annualized rate requires a separate calculation, not a different label.
A case to work through
One quarter repeated four times
A fictional comparable real GDP series grows 1% quarter on quarter.
- Calculate (1.01⁴ − 1) × 100 ≈ 4.06%.
- Do not label that result observed year-on-year growth.
What follows? Specify annualized quarterly growth.
Example boundary: The conversion assumes repetition rather than forecasting later quarters.
Annualizing a rate
Text description of the diagram
- Quarter: Hypothetical growth: 1%.
- Four periods: Compounded factor: 1.01⁴.
- Annualized rate: (1.01⁴ − 1) × 100 ≈ 4.06%.
A useful distinction
Gross Domestic Product (GDP) / Purchasing Managers' Index (PMI)
GDP measures final production; PMI describes survey response directions.
Check your understanding
Convert quarterly growth using compounding.
Show the answer and explanation
4.06%
Compounding four periods gives this result.
Publication, units and interpretation
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Read the fuller explanation
Sources and documentation
- bea.gov
- Why does BEA publish percent changes in quarterly series at annual rates?
Specifies quarterly-rate annualization by compounding four periods.
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The example illustrates the mechanism. Check current account conditions and instrument specifications with the provider.