Examlex
A positive externality results when
Pretesting
A method used to test or evaluate materials or interventions before their final application or implementation.
Population
The entire group of individuals or instances about whom the study is focused, from which a sample may be drawn for analysis.
Census
A comprehensive collection and analysis of data about every member of a population at a specific point in time.
Sample
A subset of a population selected for measurement, observation, or questioning to provide statistical information about the population.
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