Research Methods for the Behavioral Sciences (MindTap Course List)
Research Methods for the Behavioral Sciences (MindTap Course List)
5th Edition
ISBN: 9781305104136
Author: Frederick J Gravetter, Lori-Ann B. Forzano
Publisher: Wadsworth Publishing
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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 2EA

Make up a set of 10 pairs of scores (X and Y values) so that the Pearson correlation between X and Y is approximately r = 0.70. (Hint: Sketch a scatter plot similar to the one shown in Figure 15.6 showing a pattern that corresponds to a reasonably good, positive correlation. Then add numbers to both axes and read the X and Y values from your graph.) If you have access to SPSS or a similar data analysis program, calculate the Pearson correlation for your scores. (Note: Instructions for using the latest version of SPSS are contained in Appendix C.)

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Chapter 15 Solutions

Research Methods for the Behavioral Sciences (MindTap Course List)

Ch. 15.1 - Define the two general categories of statistics,...Ch. 15.1 - Prob. 2LOCh. 15.2 - Prob. 3LOCh. 15.2 - Prob. 4LOCh. 15.2 - Prob. 5LOCh. 15.2 - Prob. 6LOCh. 15.3 - Prob. 7LOCh. 15.3 - Prob. 8LOCh. 15.3 - Explain how sample size and sample variance...Ch. 15.4 - Identify the characteristics that differentiate...
Ch. 15.5 - Describe the two basic concerns with the...Ch. 15.5 - Describe the basic concern with measuring...Ch. 15 - In addition to the key words, you should also be...Ch. 15 - Describe the two general purposes of statistics...Ch. 15 - Explain the difference between a statistic and a...Ch. 15 - Construct a frequency distribution histogram or...Ch. 15 - Under what circumstances are the median and the...Ch. 15 - For a distribution with a mean of 70 a. If the...Ch. 15 - A researcher obtains a correlation of r = -0.72...Ch. 15 - Prob. 8ECh. 15 - Briefly explain what is meant when a researcher...Ch. 15 - Prob. 10ECh. 15 - Describe the relationship between the alpha level...Ch. 15 - Explain how increasing the size of the sample can...Ch. 15 - Prob. 13ECh. 15 - Identify the appropriate hypothesis test for each...Ch. 15 - Prob. 15ECh. 15 - Prob. 16ECh. 15 - Prob. 1EACh. 15 - Make up a set of 10 pairs of scores (X and Y...
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