Statistics for The Behavioral Sciences (MindTap Course List)
Statistics for The Behavioral Sciences (MindTap Course List)
10th Edition
ISBN: 9781305504912
Author: Frederick J Gravetter, Larry B. Wallnau
Publisher: Cengage Learning
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Concept explainers

Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as p…
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Chapter 15, Problem 20P

It appears that there is a significant relationship between cognitive ability and social status, at least for birds. Boogert, Reader, and Laland (2006) measured social status and individual learning ability for a group of starlings. The following data represent results similar to those obtained in the study. Because social status is an ordinal variable consisting of five ordered categories, the Spearman correlation is appropriate for these data. Convert the social status categories and the learning scores to ranks, and compute the Spearman correlation

    Subject Social

StatusLearning

Score A 1 3 B 3 10 C 2 7 D 3 11 E 5 19 F 4 17 G 5 17 H 2 4 I 4 12 J 2 3

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Chapter 15 Solutions

Statistics for The Behavioral Sciences (MindTap Course List)

Ch. 15 - What information is provided by the sign (+ or -)...Ch. 15 - What information is provided by the numerical...Ch. 15 - Calculate SP (the sum of products of deviations)...Ch. 15 - Calculate SP (the sum of products of deviations)...Ch. 15 - For the following scores, X Y 2 7 5 4 4 7 7 5 2 6...Ch. 15 - For the following scores, X Y 0 4 2 9 1 6 1 9 a....Ch. 15 - For the following scores, X Y 4 0 1 5 1 0 4 5 a....Ch. 15 - For the following scores, X Y 3 6 5 5 6 0 6 2 5 2...Ch. 15 - With a small sample, a single point can have a...Ch. 15 - For the following scores, X Y 4 5 6 5 3 2 9 4 6 5...
Ch. 15 - Correlation studies are often used to help...Ch. 15 - In the Chapter Preview we discussed a study by...Ch. 15 - The researchers cited in the previous problem also...Ch. 15 - 14. Identifying individuals with a high risk of...Ch. 15 - 15. For a two-tailed test with =.05 , use Table...Ch. 15 - 16. As we have noted in previous chapters, even a...Ch. 15 - 17. A researcher measures three variables, X, V,...Ch. 15 - A researcher records the annual number of serious...Ch. 15 - 19. A common concern for students (and teachers)...Ch. 15 - It appears that there is a significant...Ch. 15 - Prob. 21PCh. 15 - Prob. 22PCh. 15 - Prob. 23PCh. 15 - Studies have shown people with high intelligence...
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