Multipliers - AP Macroeconomics

1. What does a tax cut signify in terms of economic stimulation?

   Increases economic activity. Tax cuts boost disposable income and consumer spending.

2. Express the change in GDP with a $200 increase in exports, MPC = 0.9.

   GDP increases by $2000. Using export multiplier: $200 × 10 = $2000.

3. State the effect of a high savings rate on multipliers.

   Weakened multipliers. High savings reduces MPC, weakening all multiplier effects.

4. What is the direct effect of an increased investment on GDP?

   Increases GDP. Investment is a component of aggregate demand.

5. How does a decrease in government spending affect GDP?

   GDP decreases. Government spending directly adds to aggregate demand.

6. What does MPS stand for in economics?

   Marginal Propensity to Save. The fraction of additional income that consumers save.

7. What is the impact of fiscal policy on multipliers?

   Influences GDP through spending and taxation. Government uses multipliers to predict policy effectiveness.

8. What does a multiplier greater than 1 indicate?

   Amplified effect on GDP. Each dollar of spending creates more than one dollar of GDP.

9. What is the formula for the change in GDP from a tax cut?

   Tax cut × Tax multiplier. Tax cuts stimulate GDP through the negative tax multiplier.

10. What is the formula for the net export multiplier?

    $\frac{1}{1 - MPC}$. Net exports work the same way as other spending injections.

11. State the effect of an increase in savings on economic activity.

    Reduces economic activity. More savings means less consumption and spending.

12. What is the implication of a high tax rate on disposable income?

    Reduces disposable income. Higher taxes leave consumers with less money to spend.

13. State the effect of a decrease in taxes on GDP.

    GDP increases. Tax cuts increase disposable income and consumption.

14. What is the formula for the spending multiplier?

    $\frac{1}{1 - MPC}$. Based on how much of each dollar is spent vs. saved.

15. Identify the effect of a high MPC on the tax multiplier.

    Larger absolute value of tax multiplier. Higher MPC makes the tax multiplier more negative.

16. Identify the result of a $100 increase in government spending, MPC = 0.75.

    GDP increases by $400. Using spending multiplier: $100 × 4 = $400.

17. What is the effect on GDP of a simultaneous increase in taxes and spending?

    GDP increases by the amount of spending increase. The balanced budget multiplier always equals 1.

18. State the formula for the balanced budget multiplier.

    Always equal to 1. Spending and tax effects exactly offset when changed equally.

19. What is the effect of a decrease in exports on GDP?

    GDP decreases. Exports are a component of aggregate demand.

20. Identify the impact on GDP of an increase in foreign demand.

    GDP increases. Higher foreign demand increases exports and domestic GDP.

21. What determines the strength of a multiplier effect?

    Value of MPC. Higher MPC creates larger multipliers for all types.

22. What does a negative tax multiplier signify?

    Inverse relationship with GDP. Tax increases reduce GDP, hence the negative multiplier.

23. What is the relationship between the tax multiplier and MPC?

    Directly proportional. Higher MPC makes the tax multiplier more negative (larger magnitude).

24. Which multiplier is generally larger, spending or tax?

    Spending multiplier. Spending has no negative sign, making it larger in absolute value.

25. State the formula for the tax multiplier.

    $\frac{-MPC}{1 - MPC}$. Negative because tax increases reduce disposable income.

26. What is the impact of a balanced budget multiplier?

    Equal change in GDP. Equal increases in spending and taxes have a net multiplier of 1.

27. What happens to the multiplier if MPC increases?

    Multiplier increases. Higher MPC means more spending per dollar, amplifying effects.

28. What role does the multiplier play in fiscal policy?

    Magnifies fiscal policy effects on GDP. Multipliers amplify the impact of government spending and taxes.

29. What does MPC stand for in economics?

    Marginal Propensity to Consume. The fraction of additional income that consumers spend.

30. How does consumer confidence affect the multiplier?

    Higher confidence strengthens multiplier. Confidence affects how much people spend from additional income.

31. What is the formula for the total change in GDP?

    Initial change in spending × Spending multiplier. The initial injection gets multiplied through rounds of spending.

32. Identify the impact of a $500 increase in investment with MPC = 0.8.

    GDP increases by $2500. Using spending multiplier: $500 × 5 = $2500.

33. Which factor does not affect the spending multiplier?

    Tax rate. Spending multiplier depends only on MPC, not tax rates.

34. How does an increase in MPS affect the spending multiplier?

    Multiplier decreases. Higher saving means less spending, reducing the multiplier.

35. What is the significance of a multiplier in economic analysis?

    Assess impact of fiscal changes. Multipliers help predict how policy changes affect GDP.

36. What is the effect of a higher MPC on consumption?

    Increases consumption. Higher MPC means people consume more of each dollar earned.

37. What does a smaller MPS mean for the spending multiplier?

    Larger spending multiplier. Lower MPS means higher MPC and greater multiplier effect.

38. Express the spending multiplier in terms of MPS.

    $\frac{1}{MPS}$. Since MPS = 1 - MPC, this is equivalent to the standard formula.

39. What is the relationship between MPS and MPC?

    MPS = 1 - MPC. Income must be either consumed or saved, so they sum to 1.

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