Efficiency (disambiguation)

Look up efficiency in Wiktionary, the free dictionary.

Efficiency is the extent to which time or effort is well used for the intended task or purpose.

Efficiency may also refer to:

Efficiency (aerodynamics), the amount of lift divided by the aerodynamic drag
Efficiency (apartment), a one-room apartment
Efficiency (basketball), a statistical benchmark to compare the overall value of players
Efficiency (economics), a situation in which nothing can be improved without something else being hurt
- Efficiency (fair division), any changes made to assist one person would harm another
Efficiency (finance), non-mean-variance portfolio analysis, a way of showing that a portfolio is not efficient
Efficiency (mechanical)
Efficiency (network science), a measure of how efficiently a network exchanges information
Efficiency (statistics), a measure of quality of an estimator, experiment, or test
Energy efficiency (physics), the ratio of power consumed to useful power output