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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Chapter 11.2, Problem 2LO
Define a main effect for one factor and an interaction between factors, and be able to identify main effects and interactions in the results from a two-factor design.
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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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- A two-factor, between subject research study with two levels of factor A and two levels of factor B would require two separate groups of participants. True Falsearrow_forwardIn a two factor factorial design with two design factors A and B, why do we generally include the interaction term in the model? What is the major concern if the model ignores the interaction effect?arrow_forwardWhat is the chi square-crit for the alpha level of .05 when you have 5 column categories and 5 row categories (5x5 grid) in a chi square analysis?arrow_forward
- Give me an example of a single factor design and an example of a factorial design. Provide the independent variable (IV) with its levels and dependent variable (DV) for the single factor design and the independent variables with their levels and DV for the factorial designarrow_forwardA researcher would like to use a factorial study to compare two programs designed to help people stop smoking. The smoking behavior of each participant will be measured at the beginning of the program, at the end of the program, and again 4 months after the program has ended. Thus, the two treatment program make up one factor, three measurement times make up the second factor. For this study, which factor (s) should be between subjects and which should be within subjects?arrow_forwardA two factor research study has 2 levels of factor A and 3 of factor B with n=8 participants in each treatment conidtion. For this study, what is the value for df between treatments?arrow_forward
- In a previous study, it has already been determined that a common ADD treatment is effective, but researchers want to determine what dosage level is most appropriate. You set up an experiment to consider the factor of dosage with two levels (300mg vs. 500mg). What would be the different treatment groups of the experiment within each block? Three groups: no drug/300mg of new drug/500mg of new drug Three groups: placebo/300mg of new drug/500mg of new drug Two groups: 300mg of new drug/500mg of new drug Two groups: placebo/ either 300 or 500mg of new drugarrow_forwardAn amusement park studied methods for decreasing the waiting time (minutes) for rides by loading and unloading riders more efficiently. Two alternative loading unloading methods have been proposed. To account for potential differences due to the type of ride and the possible interaction between the method of loading and unloading and the type of ride, a factorial experiment was designed. Use the following data to test for any significant effect due to the loading and unloading method, the type of ride, and interaction. Use a = 0.5. Factor A is method of method of loading and unloading; factor B is the type of ride. Thank youarrow_forwardHow can we classify experimental designs? Explain one in eachcategory.arrow_forward
- An interaction effect can be defined as the effect ______. A. that does not occur between the independent variables and the dependent variables B. of one independent variable at one of the levels of another independent variable C. of an independent variable within a single-factor research design D. of one independent variable on the dependent variable changing at the different levels of another independent variablearrow_forwardwhat are the steps to complete row reduction method?arrow_forwardWhat is the special solution of the differantial equations?arrow_forward
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