Research Methods for the Behavioral Sciences (MindTap Course List)
6th Edition
ISBN: 9781337613316
Author: Frederick J Gravetter, Lori-Ann B. Forzano
Publisher: Cengage Learning
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Textbook Question
Chapter 11, Problem 3.0E
Suppose a researcher conducts a two-factor study comparing two treatments (I and II) for college graduates versus adults with no college experience. The structure of the study is shown in the following matrix.
Treatment
I. College graduate..
II. No college.
a. If the results show that college graduates have higher scores than the no-college adults in treatment I and equivalent scores in treatment II. is it likely that there will be a main effect for the education factor? Is it likely that there will be an interaction?
b. If the results show that college graduates have higher scores than the no-college adults in treatment I and lower scores than the no-college adults in treatment II, is it likely that there will be a main effect for the education factor? Is it likely that there will be an interaction?
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16. For the data in the following matrix:
Male
Female
No
Treatment
M = 8
M = 4
overall con
M = 6
Treatment
M = 14
M = 10
overall
M = 12
Overall M=11
Overall M=7
a. Which two means are compared to describe the
treatment main effect?
b. Which two means are compared to describe the
gender main effect?
c. Is there an interaction between gender and treat-
ment? Explain your answer.
If a researcher found a significant interaction between Factor A and Factor B, what does this mean (in general)?
O Both Factor A & Factor B have independent effects.
O The effect of Factor A on the dependent variable depends on the level of Factor B.
O Only Factor A is significant.
none of the above.
The data set hemorrhage.sav contains a sample of 100 low birth weight infants born in Boston, Massachusetts. Germinal matrix hemorrhage (gmh) is a dichotomos variable that coded as 1 if the baby had a hemorrhage and 0 if the baby did not have a hemorrhage.
You wish to know if head circumference, systolic blood pressure (sbp), and gender predicts hemorrhage. (See the attached Image)
Determine the significance of the independent variables in the model, provide the test statistics and p-values to support your response.
Chapter 11 Solutions
Research Methods for the Behavioral Sciences (MindTap Course List)
Ch. 11.1 - Define a factorial research design, including the...Ch. 11.2 - Define a main effect for one factor and an...Ch. 11.2 - Explain how the existence of an interaction can...Ch. 11.2 - Describe and explain the independent relationship...Ch. 11.3 - Explain how a factorial study can combine...Ch. 11.3 - Identify the statistical analyses that are...Ch. 11.4 - Describe three specific applications of the...Ch. 11 - In addition to the key words, you should also be...Ch. 11 - In a classic study, Shrauger (1972) examined the...Ch. 11 - Suppose a researcher conducts a two-factor study...
Ch. 11 - The following matrix represents the results (the...Ch. 11 - The following data show the pattern of results...Ch. 11 - Explain why the main effects in a factorial study...Ch. 11 - Explain what is meant by the concept that main...Ch. 11 - In Figure 11.5, we show three combinations of main...Ch. 11 - For a two-factor research study with two levels...Ch. 11 - A researcher would like to use a factorial study...Ch. 11 - A two-factor analysis of variance is used to...Ch. 11 - A researcher has demonstrated that a new...
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