Examlex
One of the class intervals in a grouped frequency distribution is 60 - 64. What is the size of the interval?
Dependent Variable
A variable that an experimenter predicts will be affected by manipulations of the independent variable.
Experimenter's Manipulations
The deliberate changes or variations introduced by researchers in an experiment to investigate their effects on the outcome.
Extraneous Variable
Any variable that is not intentionally studied in the experiment which can affect the outcome of the research if not controlled.
Confounding Variable
An outside influence that changes the effect of a dependent and independent variable. This extraneous influence is used to influence the outcome of an experimental design.
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