Justification for a Modeling Assumption
In macroeconomic models of countries with fixed exchange rate systems, economists often assume the nominal exchange rate is perfectly constant. Explain the primary justification for this simplification and identify one potential limitation of this approach.
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Evaluating a Modeling Assumption for Exchange Rates
An economist is creating a basic macroeconomic model to study the immediate impact of a new fiscal policy in a country with a fixed exchange rate system. Although the central bank allows for tiny, insignificant daily fluctuations, its stated policy is to maintain a stable currency value. For the purpose of this simplified, short-term analysis, which approach to modeling the exchange rate is most appropriate and why?
Justification for a Modeling Assumption
In macroeconomic modeling, assuming a perfectly constant nominal exchange rate for a country with a fixed exchange rate regime is considered a fundamental error because real-world fixed rates always exhibit minor fluctuations.
Evaluating a Modeling Simplification in Exchange Rate Regimes