Examlex
A tax is efficient if it imposes a small excess burden relative to the tax revenue it raises.
Treatment Variable
A variable manipulated by an experimenter in a study to observe its effect on the dependent variable.
Reliability
The degree to which an assessment tool produces stable and consistent results over time.
Validity
The extent to which a test or instrument measures what it is intended to measure, indicating the accuracy of the test.
Research Process
A systematic procedure that involves the collection, analysis, and interpretation of data to answer a question or solve a problem.
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