Marginal propensityThe fraction of a change in income devoted to an activity, such as consumption, importing, or saving. See propensity.
Average propensity to importAverage propensity to import
The fraction of total income spent on imports; thus the ratio of imports to GDP. Contrasts with marginal propensity to import.
Import propensityImport propensity
The marginal propensity to import (or sometimes the average propensity, if they are different).
Average propensityAverage propensity
The fraction of total income spent on an activity, such as consumption or imports. See propensity.
Marginal propensity to saveMarginal propensity to save
The fraction of a change in income (or perhaps disposable income) that is saved.
The extent to which an economic agent is inclined to use income for a particular purpose, such as the (marginal or average) propensity to import, or propensity to consume, measured as the fraction of income (or of a change in income, if marginal) devoted to such an activity.
Further SuggestionsMarginal propensity to import
Average propensity to consume
Marginal propensity to consume