multiple choice questions for Objective 1

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Chapter 9

This activity contains 2 questions.

In experimental research, the researcher manipulates

	at least one dependent variable.
	all variables.
	at least one independent variable.
	at least one independent variable and one dependent variable.

In an experimental study of the effects of multi-age grouped classes on academic achievement after controlling for IQ, the dependent variable is

	academic achievement.
	IQ.
	multi-age grouping.
	students' age.

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