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9th Edition

Frederick J Gravetter + 2 others

Publisher: Cengage Learning

ISBN: 9781337098120

Chapter 13, Problem 2P

Textbook Problem

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A researcher conducts an experiment comparing four treatment conditions with *n* - 12 scores in each condition.

**a.**If the researcher uses an independent-measures design, how many individuals are needed for the study and what are the df values for the F-ratio?**b.**If the researcher uses a repeated-measures design, how many individuals are needed for the study and what are the df values for the F-ratio?

**a.**

To determine

The numbers of individuals and *df* values for the *F*-ratio needed for the study.

**Given info:**

A researcher conducts an experiment comparing four treatment conditions with

**Calculation:**

Let *n* and *k* represent the numbers of participants in each treatment and total numbers of treatments. Then,

In case of independent-measures design, participants in each treatment are different. Let, *N* represents total numbers of participants in the study, then,

**b.**

To determine

Numbers of individuals and *df* values for the *F*-ratio needed for the study.

Essentials of Statistics for The Behavioral Sciences (MindTap Course List)

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Ch. 13.1 - Where are individual differences located in the...Ch. 13.1 - What happens to the variability due to individual...Ch. 13.2 - What happens during the second stage of a...Ch. 13.2 - For a repeated-measures ANOVA, which of the...Ch. 13.2 - For the following data, what are the df values for...Ch. 13.2 - The results of a repeated-measures ANOVA are...Ch. 13.3 - Which of the following are advantages of a...Ch. 13.3 - A repeated-measures ANOVA produced an F-ratio of F...Ch. 13.4 - A two-factor study with two levels of factor A and...Ch. 13.4 - Which of the following accurately describes an...

Ch. 13.4 - The results from a two-factor analysis of variance...Ch. 13.5 - Which of the following accurately describes the...Ch. 13.5 - In a two-factor analysis of variance, the F-ratio...Ch. 13.5 - The following table shows the results for a...Ch. 13 - What is the relationship between the F-ratio for a...Ch. 13 - A researcher conducts an experiment comparing four...Ch. 13 - A researcher conducts a repeated-measures...Ch. 13 - The following data were obtained from a...Ch. 13 - The following data represent the results of a...Ch. 13 - One of the advantages of a repeated-measures...Ch. 13 - The following summary table presents the results...Ch. 13 - The following summary table presents the results...Ch. 13 - A researcher use a repeated-measures ANOVA to...Ch. 13 - A published report of a repealed-measures research...Ch. 13 - The following data are from a repeated-measures...Ch. 13 - The following data are from a repeated-measures...Ch. 13 - In Problem 6 at the end of Chapter 11 (page 325),...Ch. 13 - Define each of the following terms: a. Factor b....Ch. 13 - Explain what happens during each of the two stages...Ch. 13 - For the data in the following matrix: a. Which two...Ch. 13 - The following matrix presents the results from an...Ch. 13 - The following matrix presents the results of a...Ch. 13 - A researcher conducts an independent-measures,...Ch. 13 - A researcher conducts an independent-measures,...Ch. 13 - The following results are from an...Ch. 13 - The following results are from an...Ch. 13 - Most sports injuries are immediate and obvious,...Ch. 13 - The following table summarizes the results from a...Ch. 13 - The following table summarizes the results from a...Ch. 13 - Earlier in this chapter we described a study by...

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