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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Chapter 8.2, Problem 3LO
Define individual differences and explain how individual differences between groups and confounding from environmental variables can threaten the internal validity of a between-subjects design.
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A researcher would like to determine the effects of School Type and SES on Math scores. Conduct the appropriate analysis to address this research question. Fully and substantively interpret the results of all relevant statistical tests conducted.
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Chapter 8 Solutions
Research Methods for the Behavioral Sciences (MindTap Course List)
Ch. 8.1 - Describe, compare, and contrast the defining...Ch. 8.1 - Explain the general advantages and disadvantages...Ch. 8.2 - Define individual differences and explain how...Ch. 8.3 - Identify the three primary techniques for limiting...Ch. 8.4 - Describe how individual differences influence...Ch. 8.4 - Identify the options for reducing or controlling...Ch. 8.5 - Describe how differential attrition and...Ch. 8.6 - Describe how between-subjects designs are used to...Ch. 8 - In addition to the key words, you should also be...Ch. 8 - Identify the basic features of a between-subjects...
Ch. 8 - In a between-subjects design, each individual...Ch. 8 - Briefly explain how a participant characteristic,...Ch. 8 - Briefly explain how random assignment attempts to...Ch. 8 - Explain the advantages and disadvantages of using...Ch. 8 - Briefly explain why large variance within...Ch. 8 - Explain how holding a participant variable such as...Ch. 8 - Explain how holding a participant variable such as...Ch. 8 - Describe some of the problems that can arise when...Ch. 8 - Describe the advantages of a two-group design...Ch. 8 - A researcher has a sample of 30 rats that are all...Ch. 8 - A recent survey at a major corporation found that...
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- It is desired to investigate whether there is a relationship between gender and occupational groups. Which method is appropriate for this research? Please explain with reason.arrow_forwardA real estate developer wishes to study the relationship between the size of home a client will purchase (in square feet) and other variables. Possible independent variables include the family income, family size, whether there is a senior adult parent living with the family (1 for yes, 0 for no), and the total years of education beyond high school for the husband and wife. The sample information is reported below. Family Square Feet Income (000s) Family Size Senior Parent Education 1 2,300 60.8 2 0 4 2 2,300 68.4 3 1 6 3 3,400 104.5 3 0 7 4 3,360 89.3 4 1 0 5 3,000 72.2 4 0 2 6 2,900 113 2 1 10 7 4,100 125.4 5 0 6 8 2,250 83.6 3 0 8 9 4,200 133 5 0 2 10 2,800 95 3 0 6 Click here for the Excel Data File Develop an appropriate multiple regression equation using stepwise regression. (Use Excel data analysis and enter number…arrow_forwardA real estate developer wishes to study the relationship between the size of home a client will purchase (in square feet) and other variables. Possible independent variables include the family income, family size, whether there is a senior adult parent living with the family (1 for yes, 0 for no), and the total years of education beyond high school for the husband and wife. The sample information is reported below. Family Square Feet Income (000s) Family Size Senior Parent Education 1 2,300 60.8 2 0 4 2 2,300 68.4 3 1 6 3 3,400 104.5 3 0 7 4 3,360 89.3 4 1 0 5 3,000 72.2 4 0 2 6 2,900 113 2 1 10 7 4,100 125.4 5 0 6 8 2,250 89.6 3 0 8 9 4,200 133 5 0 2 10 2,800 98 3 0 6 a. Develop an appropriate multiple regression equation using stepwise regression. (Use Excel data analysis and enter number of family members first, then their income and delete any insignificant variables. Leave no cells blank - be certain to enter "0" wherever required. R and R2 adj are in…arrow_forward
- A real estate developer wishes to study the relationship between the size of home a client will purchase (in square feet) and other variables. Possible independent variables include the family income, family size, whether there is a senior adult parent living with the family (1 for yes, 0 for no), and the total years of education beyond high school for the husband and wife. The sample information is reported below. Family Square Feet Income (000s) Family Size Senior Parent Education 1 2,240 60.8 2 0 4 2 2,380 68.4 2 1 6 3 3,640 104.5 3 0 7 4 3,360 89.3 4 1 0 5 3,080 72.2 4 0 2 6 2,940 114 3 1 10 7 4,480 125.4 6 0 6 8 2,520 83.6 3 0 8 9 4,200 133 5 0 2 10 2,800 95 3 0 6 a. Develop an appropriate multiple regression equation using stepwise regression. (Use Excel data analysis and enter number of family members first, then their income…arrow_forwardA real estate developer wishes to study the relationship between the size of home a client will purchase (in square feet) and other variables. Possible independent variables include the family income, family size, whether there is a senior adult parent living with the family (1 for yes, 0 for no), and the total years of education beyond high school for the husband and wife. The sample information is reported below. Family Square Feet Income (000s) Family Size Senior Parent Education 1 2,240 60.8 2 0 4 2 2,380 68.4 2 1 6 3 3,640 104.5 3 0 7 4 3,360 89.3 4 1 0 5 3,080 72.2 4 0 2 6 2,940 114 3 1 10 7 4,480 125.4 6 0 6 8 2,520 83.6 3 0 8 9 4,200 133 5 0 2 10 2,800 95 3 0 6 Develop an appropriate multiple regression equation using stepwise regression. (Use Excel data analysis and enter number of family members first, then their income and…arrow_forwardWhat does an A X B interaction mean in a two - way ANOVA? A. The affect of factor A depends on the level of factor B B. The main effects for Factors A and B must be short of significance C. There must be significant main effects for Factors A and B D. If there are significant main effects, they must be interpreted first before interpreting the interactionarrow_forward
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- . Present a description of your variables: Provide a codebook with the following four columns: (1) Variable name; (2) Variable label; (3) Value & Value label and Level of measurement (i.e., nominal, ordinal, interval, ratio). Please present this as a table. This should fit on one page.arrow_forwardIn a between subjects design, individual differences (participant variables) are a problem because they can.. A. Produce fatigue effects B. Become confounding variables C. Decrease variability of the scores D. Preclude the use of statistical analysesarrow_forwardPart 1.For the following research questions indicate the PREDICTOR variable and the OUTCOME variable. 1.Are there differences in the amount of discipline referrals between girls and boys with Autism SpectrumDisorders? Outcome variable: Predictor (grouping) variable: b. Do students exposed to animated science materials learn more if the animation is accompanied by soundor no sound? Outcome variable: Predictor (grouping) variable: c. The goal of this study was to compare scores on a standardized achievement test in classes using atraditional mathematics textbook and classes using a reform mathematics curriculum emphasizingmanipulatives. Outcome variable: Predictor (grouping) variable: d. What variable best predicts whether first generation college students stay continually enrolled in collegeuntil graduation? Outcome variable: Predictor (grouping) variable:arrow_forward
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