Examlex
The principal instrument for presidential secrecy has been the _____.
Independent Variable
The variable in an experiment that is manipulated by the researcher to examine its effect on the dependent variable.
Random Assignment
A method used in experiments where participants are allocated to different groups in a manner that is determined by chance.
Manipulated
Altered or controlled in a deliberate way, often used in the context of variables in experimental research.
Variable
An element, feature, or factor that is liable to vary or change.
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