Statistics For The Behavioral And Social Sciences: A Brief Course, Books A La Carte (6th Edition) (what's New In Psychology)
Statistics For The Behavioral And Social Sciences: A Brief Course, Books A La Carte (6th Edition) (what's New In Psychology)
6th Edition
ISBN: 9780205989065
Author: Arthur Aron Ph.D., Elliot J. Coups Ph.d., Elaine N. Aron Ph.D.
Publisher: PEARSON
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Chapter 8, Problem 1.1HD

(a)

To determine

Explain when the t test for independent means should be used.

(a)

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Explanation of Solution

The t test for independent means:

When two groups of people who are not dependent on each other are tested for defined hypothesis then the t test for independent means must be used. In this study the variance of the population is not known.

(b)

To determine

Explain how t test for independent means is different from t test for dependent means.

(b)

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Explanation of Solution

The t test for dependent means:

When each of the participants in hypothesis testing is measured twice, or some dependent participants are paired, the t test for dependent means is used. In other words, t test for dependent means is used when participants has two different scores such as ‘before and after’ with the unknown population variance.

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