CONSUMPTION

Which of the following statements is true relative to the basic consumption function?

1. Keynes hypothesized that consumption is positively related to disposable income.

2. The marginal propensity to consume, MPC, is measured as changes in consumption over changes in disposable income.

3. The MPC is merely the percent of one’s income that is spent to purchase goods and services.

4. The MPC is simply the slope of the consumption function.

5. If the MPC is .8, then it may be concluded that the MPS must be .2.

6. If a person’s income is $10,000 and that person is spending $7,500 on consumption, when it may be concluded that that person has a marginal propensity to save of .25.

7. The MPC and the MPS must add to one.

8. Given a linear (straight-line) consumption function, the MPC must be a constant.

9. At the point graphically at which the consumption function intersects the 45-degree reference line, the MPC must be equal to 1.

10. If the consumption function lies above the 45-degree reference line, then there must be negative saving in the economy.

11. Autonomous consumption is merely that level of consumption spending that is independent of the level of income.

12. A change in the level of income will shift the consumption function either upward or

downward.

13. A change in the level of consumer wealth will shift the consumption function either upward or downward.

14. If the MPC has a positive value, then the MPS must have a negative value.

15. Saving is defined simply as disposable income minus consumption.

16. If the consumption function has a slope of 4/5, then the saving function must have a slope of .2.

17. Any factor that would shift the consumption function upward would shift the saving function upward also.

18. The average propensity to consume (APC), like the MPC, is simply the slope of the basic, Keynesian consumption function.

19. Given a typical shaped consumption function, as the level of income rises, the APC rises as well.

20. If a consumption function graphically starts at a point above the origin (i.e., has a positive vertical axis intercept), then the saving function must begin below the origin.

21. A dramatic rise in household inflationary expectations could be expected to shift the consumption function downward and the saving function upward.