SUMMARY
CHAPTER 13: BASIC MACROECONOMIC
RELATIONSHIPS
INCOME-CONSUMPTION AND INCOME-SAVING RELATIONSHIPS AND
SCHEDULES
Savings = S
Disposable Income = Yd
Gross Income = Y
Consumption = C
Yd = C + S
S = Yd - C
C = Yd - S
CONSUMPTION SAVINGS SCHEDULE
Saving function = Yd - C
When C (Consumption) = Yd (Disposable Income), S (Savings) = 0
MARGINAL PROPENSITIES
MARGINAL PROPENSITY TO CONSUME (MPC):
MPC = Change in Consumption ÷ Change in Income
= ∆C ÷ ∆Y
MARGINAL PROPENSITY TO SAVING (MPS):
MPS = Change in Savings ÷ Change in Income
= ∆S ÷ ∆Y