Essentials of Statistics for The Behavioral Sciences (MindTap Course List)
9th Edition
ISBN: 9781337098120
Author: Frederick J Gravetter, Larry B. Wallnau, Lori-Ann B. Forzano
Publisher: Cengage Learning
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Textbook Question
Chapter 13.5, Problem 1LC
Which of the following accurately describes the two stages of a two-factor ANOVA'?
- a. The first stage partitions the total variability and the second stage partitions the within-treatment variability.
- b. The first stage partitions the total variability and the second stage partitions the between-treatment variability.
- c. The first stage partitions the between-treatment variability and the second stage partitions the within-treatment variability.
- d. None of the other options is accurate.
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The relationship between the independent variable (IV) and the dependent variable (DV) is likely to be mediated by a third variable (MV). With regard to the statement above, which of the following is most likely to be correct?
A IV = Students’ performance (i.e., marks) in the formative assessment; DV = Students’ performance (i.e., marks) in the summative assessment, and MV = Students’ level of comfort with the venue of the assessments
B IV = Students’ performance (i.e., marks) in the summative assessment; DV = Students’ performance (i.e., marks) in the formative assessment, and MV = Students’ level of preparation for the assessments.
C IV = Students’ performance (i.e., marks) in the formative assessment; DV = Students’ performance (i.e., marks) in the summative assessment, and MV = Students’ level of preparation for the assessments
D IV = Students’ performance (i.e., marks) in the summative assessment; DV = Students’ performance (i.e., marks) in the formative assessment,…
Ophthalmology
The following data are from a study on Botox injections. Patients received a high-dose injection in one eye
(experimental treatment = treatment E) and a low-dose injection in the other eye (control treatment =
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indicating more pain. The assignment of treatments to eyes was randomized. The subjects came back over
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Effect of Botox injection on eye pain
Subject
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pain score at the last visit
Pain in E eye Pain in C eye
1.3
7.3
0.0
0.0
3.0
0.0
3.5
0.0
0.0
2.0
0.0
3.0
5.0
0.3
0.0
4.3
USE SALT
8.7
1.4
0.9
9.6
7.9
9.1
5.1
2.2
2.6
7.9
4.4
4.6
9.1
7.4
0.4
0.7
UNİ TANTE ELANIKE
Cunnnen win wich to compare the nain score in the E eve vs. the pain score in the C eye.
A researcher wants to study how daily protein supplementation in the elderly population will affect baseline liver fat. The study budget will allow the enrollment of 62 patients. Half will be randomized to a placebo group and half to the protein supplement treatment group, and the trial will be carried out over one month. It is desired to see whether the mean change in the percentage of liver fat from baseline to the end of the study differs between the two groups in the study. The researcher needs to know what power can be obtained under the sample size restrictions to identify a change in the mean percent liver fat of 10. Based on results observed in past similar studies, a common standard deviation of 12 will be used for each treatment group in the power analysis. Assume that the significance level is 0.05.
Chapter 13 Solutions
Essentials of Statistics for The Behavioral Sciences (MindTap Course List)
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 - Prob. 2LCCh. 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 - Prob. 1LCCh. 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 - Prob. 3LCCh. 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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