Aggregate Expenditures Flashcards
Aggregate expenditures
The current value of all finished goods and services. GDP=AE=C+I+G+(X-M). Consumption is a major factor
Savings S
The difference between income and consumption, the amount of a disposable income not spent
Disposable income Y
Income remaining after deduction of taxes C+S
Average propensity to consume APC
The percentage of income that is consumed APC=Consumption/disposable income
Average propensity to save APS
The percentage of income that is saved APS=savings/disposable income. APS+APC=1
What do average propensity to consume and save represent?
Represent the proportion of income that is saved
What does marginal propensity measure?
Part of additional income that is saved or consumed
Marginal propensity to consume MPC
The change in consumption associated with a given change in income. MPC=change in consumption/change in disposable income
Marginal propensity to save MPS
The change in consumption associated with a given change in income MPS=Change in savings/change in disposable income. MPC+MPS=1
Determinants of consumption and savings
Wealth, expectations, household debt, taxes
Investment
Spending by businesses that adds to the productive capacity of the economy. Depends on rate of return, level of tech, business expectations about the economy
Determinants of demand
Expectations, tech changes, operating costs, capital goods on hand
On what does aggregate investment based?
It is based on c and I
Keynesian macroeconomic equilibrium
All injections are equal to all withdrawals. There are no pressures pushing the economy to a higher or lower level of output
Formula of spending multiplier K
K=1/1-MPC=1/MPS