Examlex
Monopolistic competition differs from perfect competition only in the number of firms participating in the market.
Quasi-Experiment
A research design that attempts to establish a cause-and-effect relationship but lacks the random assignment of subjects to experimental and control groups.
Control Group
In experimental research, the group of participants that does not receive the intervention being tested, used as a benchmark to measure the effect of the intervention.
Independent Variable
A variable that is manipulated to determine its effects on a dependent variable in an experiment.
Experiment
Rigorously controlled, replicable procedure in which the researcher manipulates variables to assess the effect of one on the other.
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