multiple choice questions for Objective 17

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Chapter 12

This activity contains 2 questions.

Ms. Kirby has selected a pretest posttest experimental control group design for her study. Which statistical test is the most appropriate to analyze her data?

	t test comparing gain scores
	t test comparing posttest scores
	ANCOVA using the pretest as a covariate
	Scheffé post-hoc comparison

A variable which is used to adjust posttest scores for initial differences is known as a

	independent variable.
	dependent variable.
	covariate.
	confounding variable.

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