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multiple choice questions for Objective 4

multiple choice questions for Objective 4

This activity contains 3 questions.

The unique characteristic of causal-comparative designs is the lack of

	differences between groups on the independent variable.
	measures of the dependent variable.
	reliable results.
	pretests of both groups.

The major difference between an experimental control group and comparison group design involves the

	measurement of the dependent variable.
	reliability of the results.
	use of a "treatment" by the control group.
	use of a "pretest" by the comparison group.

Why is it advantageous to randomly select subjects from those available in each of the preexisting groups?

	Representation of the subjects in each group is assured.
	Equal numbers of subjects can participate.
	Specific subjects can be targeted for participation.
	Sample sizes can be controlled.

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