The Keynesian-cross model is a complete macroeconomic model.

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The Keynesian-cross model is a basic model that explains the interaction between aggregate demand (which is a function of income) and aggregate supply (which is assumed to be fixed in the short run). It only focuses on the determination of equilibrium income and output, and does not include other important macroeconomic variables such as inflation, exchange rates, or interest rates. Therefore, it cannot be considered a complete macroeconomic model.

The Keynesian-Cross Model Is a Complete Macroeconomic Model