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Dr.Patterson concludes from her research that using a systematic study strategy CAUSED good grades for students assigned to a particular group.For this conclusion to be valid,the type of research that was performed must have been what type of study?
Motorcycle Fatalities
Deaths resulting from accidents involving motorcycles.
Independent Variable
A factor manipulated by the experimenter to investigate its effects on the dependent variable in a study.
Factorial Design
A design in which all levels of each independent variable are combined with all levels of the other independent variables. A factorial design allows investigation of the separate main effects and interactions of two or more independent variables.
Main Effect
The direct effect of an independent variable on a dependent variable.
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