Marginal analysis is the analysis of agent behavior when
agents are assumed to make choices in small steps. Agents increase
an activity when the marginal benefit
from the activity outweighs the marginal
cost, and reduce the activity when the marginal benefit falls
short of the marginal cost.
Economic
Indicators
Large Retailers' After Tax Profits
(Click the graph to enlarge
it)
Check BLS,BEA,Census