Examlex
A child in the middle-school years is most likely to join a:
Census
A survey to collect data on the entire population.
Population
The full set of subjects or entities analyzed in a statistical investigation.
Experimental Studies
Research designs that involve the manipulation of one or more variables to determine their effect on one or more outcome variables.
Observational
Relating to the collection of data by observing and measuring phenomena as they occur naturally, without manipulation or intervention.
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