Examlex
Which of the following represents a rapid increase in the number of words children know that begins at approximately 18 months?
Independent Variable
In an experimental setting, this is the variable that is manipulated or changed by the researcher to observe its effect on the dependent variable.
Sample
Group of subjects selected from a larger population of subjects, usually selected randomly.
Population
In statistics and research, the entire group of individuals or instances about whom the information is desired; in biology, all the organisms of the same group or species living in a particular geographic area.
Correlational Method
A research strategy that involves measuring two or more variables to determine the degree of relationship between them.
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