Walden University Week 10 Multiple Regression Using Dummy Variable Paper

Walden University Week 10 Multiple Regression Using Dummy Variable Paper

Discussion:Week 10: Dummy Variables, Regression Diagnostics, and Model EvaluationBy now, you have gained quite a bit of experience estimating regression models. Perhaps one thing you have noticed is that you have not been able to include categorical predictor/control variables. In social science, many of the predictor variables that we might want to use are inherently qualitative and measured categorically (i.e., race, gender, political party affiliation, etc.). This week, you will learn how to use categorical variables in our multiple regression models.While we have discussed a great deal about the benefits of multiple regression, we have been reticent about what can go wrong in our models. For our models to provide accurate estimates, we must adhere to a set of assumptions. Given the dynamics of the social world, data gathered are often far from perfect. This week, you will examine all of the assumptions of multiple regression and how you can test for them.Learning ObjectivesStudents will:Analyze multiple regression testing using dummy variablesAnalyze measures for multiple regression testingConstruct research questionsEvaluate assumptions of multiple regression testingAnalyze assumptions of correlation and bivariate regressionAnalyze implications for social changeLearning ResourcesRequired ReadingsWagner, III, W. E. (2020). Using IBM® SPSS® statistics for research methods and social science statistics (7th ed.). Thousand Oaks, CA: Sage Publications. Chapter 2, “Transforming Variables” Chapter 11, “Editing Output” (previously read in Week 2, 3, 4, 5. 6, 7, 8, and 9)Allison, P. D. (1999). Multiple regression: A primer. Thousand Oaks, CA: Pine Forge Press/Sage Publications.Multiple Regression: A Primer, by Allison, P. D. Copyright 1998 by Sage College. Reprinted by permission of Sage College via the Copyright Clearance Center. Chapter 6, “What are the Assumptions of Multiple Regression?” (pp. 119–136)Allison, P. D. (1999). Multiple regression: A primer. Thousand Oaks, CA: Pine Forge Press/Sage Publications.Multiple Regression: A Primer, by Allison, P. D. Copyright 1998 by Sage College. Reprinted by permission of Sage College via the Copyright Clearance Center. Chapter 7, “What can be done about Multicollinearity?” (pp. 137–152)Multiple Regression: A Primer, by Allison, P. D. Copyright 1998 by Sage College. Reprinted by permission of Sage College via the Copyright Clearance Center. Warner, R. M. (2012). Applied statistics from bivariate through multivariate techniques (2nd ed.). Thousand Oaks, CA: Sage Publications.Applied Statistics From Bivariate Through Multivariate Techniques, 2nd Edition by Warner, R.M. Copyright 2012 by Sage College. Reprinted by permission of Sage College via the Copyright Clearance Center. Chapter 12, “Dummy Predictor Variables in Multiple Regression”Applied Statistics From Bivariate Through Multivariate Techniques, 2nd Edition by Warner, R.M. Copyright 2012 by Sage College. Reprinted by permission of Sage College via the Copyright Clearance Center. Non-Normally Distributed Errors. (1991). In J. Fox (Ed.), Regression Diagnostics. (pp. 41-49). Thousand Oaks, CA: SAGE Publications, Inc.Fox, J. (1991). Regression diagnostics. Thousand Oaks, CA: SAGE Publications.Discrete Data. (1991). In J. Fox (Ed.), Regression Diagnostics. (pp. 62-67). Thousand Oaks, CA: SAGE Publications, Inc.Nonconstant Error Variance. (1991). In J. Fox (Ed.), Regression Diagnostics. (pp. 49-54). Thousand Oaks, CA: SAGE Publications, Inc.Nonlinearity. (1991). In J. Fox (Ed.), Regression Diagnostics. (pp. 54-62). Thousand Oaks, CA: SAGE Publications, Inc.Outlying and Influential Data. (1991). In J. Fox (Ed.), Regression Diagnostics. (pp. 22-41). Thousand Oaks, CA: SAGE Publications, Inc.Fox, J. (Ed.). (1991). Regression diagnostics. Thousand Oaks, CA: SAGE Publications. Chapter 3, “Outlying and Influential Data” (pp. 22–41)Chapter 4, “Non-Normally Distributed Errors” (pp. 41–49)Chapter 5, “Nonconstant Error Variance” (pp. 49–54)Chapter 6, “Nonlinearity” (pp. 54–62)Chapter 7, “Discrete Data” (pp. 62–67)Note: You will access these chapters through the Walden Library databases.Document: Walden University: Research Design Alignment TableDatasetsDocument: Data Set 2014 General Social Survey (dataset file)Use this dataset to complete this week’s Discussion.Note: You will need the SPSS software to open this dataset.Document: Data Set Afrobarometer (dataset file)Use this dataset to complete this week’s Assignment.Note: You will need the SPSS software to open this dataset.Document: High School Longitudinal Study 2009 Dataset (dataset file)Use this dataset to complete this week’s Assignment.Note: You will need the SPSS software to open this dataset.Required MediaLaureate Education (Producer). (2016m). Regression diagnostics and model evaluation [Video file]. Baltimore, MD: Author.Note: The approximate length of this media piece is 7 minutes.In this media program, Dr. Matt Jones demonstrates regression diagnostics and model evaluation using the SPSS software. Accessible player –Downloads–Download Video w/CCDownload AudioDownload TranscriptLaureate Education (Producer). (2016). Dummy variables [Video file]. Baltimore, MD: Author.Note: This media program is approximately 12 minutes.In this media program, Dr. Matt Jones demonstrates dummy variables using the SPSS software. Accessible player –Downloads–Download Video w/CCDownload AudioDownload TranscriptOptional ResourcesSkill Builder: Interpreting Regression Coefficients for Dummy-Coded VariablesTo access these Skill Builders, navigate back to your Blackboard Course Home page, and locate “Skill Builders” in the left navigation pane. From there, click on the relevant Skill Builder link for this week.You are encouraged to click through these and all Skill Builders to gain additional practice with these concepts. Doing so will bolster your knowledge of the concepts you’re learning this week and throughout the course.Discussion: Estimating Models Using Dummy VariablesYou have had plenty of opportunity to interpret coefficients for metric variables in regression models. Using and interpreting categorical variables takes just a little bit of extra practice. In this Discussion, you will have the opportunity to practice how to recode categorical variables so they can be used in a regression model and how to properly interpret the coefficients. Additionally, you will gain some practice in running diagnostics and identifying any potential problems with the model.To prepare for this Discussion:Review Warner’s Chapter 12 and Chapter 2 of the Wagner course text and the media program found in this week’s Learning Resources and consider the use of dummy variables.Create a research question using the General Social Survey dataset that can be answered by multiple regression. Using the SPSS software, choose a categorical variable to dummy code as one of your predictor variables.By Day 3Estimate a multiple regression model that answers your research question. Post your response to the following:What is your research question?Interpret the coefficients for the model, specifically commenting on the dummy variable.Run diagnostics for the regression model. Does the model meet all of the assumptions? Be sure and comment on what assumptions were not met and the possible implications. Is there any possible remedy for one the assumption violations?Be sure to support your Main Post and Response Post with reference to the week’s Learning Resources and other scholarly evidence in APA Style.

Walden University W1 Categorical Data Analysis

Walden University W1 Categorical Data Analysis

Discussion Week 11: Introduction to Categorical Data Analysis I need this by 5th of MAYTo this point, all tests that you have explored require the use of at least one metric variable. As you have been moving through the course, you have probably asked, “what do I do if I need to test the relationship between categorical variables?” Categorical data analysis provides us with the tools to test relationships between the plethora of qualitative variables embedded within the social world. Categorical data analysis is a large field and we will be just dipping our toes in the water, but you will be provided with enough information to understand some of the special considerations and interpretations that you must take.This week, you will examine categorical data analysis. In your examination you will construct research questions, evaluate research design, and analyze results related to categorical data analysis.Learning ObjectivesStudents will:Construct research questionsEvaluate research design through research questionsAnalyze bivariate categorical testsAnalyze measures for bivariate categorical testsEvaluate significance of multiple regressionAnalyze results for multiple regression testingAnalyze assumptions of bivariate categorical testsAnalyze implications for social changeLearning ResourcesRequired ReadingsFrankfort-Nachmias, C., & Leon-Guerrero, A. (2018). Social statistics for a diverse society (8th ed.). Thousand Oaks, CA: Sage Publications. Chapter 9, “Bivariate Tables” (pp. 235-268)Chapter 11, “The Chi-Square Test and Measures of Association” (pp. 269-302)Document: Chi Square Scenarios (PDF)Use these scenarios to complete your Assignment for this week.DatasetsDocument: Data Set 2014 General Social Survey (dataset file)Use this dataset to complete this week’s Discussion.Note: You will need the SPSS software to open this dataset.Document: Data Set Afrobarometer (dataset file)Use this dataset to complete this week’s Assignment.Note: You will need the SPSS software to open this dataset.Document: High School Longitudinal Study 2009 Dataset (dataset file)Use this dataset to complete this week’s Assignment.Note: You will need the SPSS software to open this dataset.Required MediaLaureate Education (Producer). (2016a). Bivariate categorical tests [Video file]. Baltimore, MD: Author.Note: The approximate length of this media piece is 5 minutes.In this media program, Dr. Matt Jones demonstrates bivariate categorical tests using the SPSS software. Accessible player –Downloads–Download Video w/CCDownload AudioDownload TranscriptOptional ResourcesKlingenberg, B. (2016). The Chi-squared test. Retrieved from https://istats.shinyapps.io/ChiSquaredTest/Use the following app/weblink to enter your own data and obtain an interactive visual display.Discussion: Categorical Data AnalysisAs with the previous week’s Discussion, this Discussion assists in solidifying your understanding of statistical testing by engaging in some data analysis. This week you will once again work with a real, secondary dataset to construct a research question, perform categorical data analysis that answers the question, and interpret the results.Whether in a scholarly or practitioner setting, good research and data analysis should have the benefit of peer feedback. For this Discussion, you will post your response to the hypothesis test, along with the results. Be sure and remember that the goal is to obtain constructive feedback to improve the research and its interpretation, so please view this as an opportunity to learn from one another.To prepare for this Discussion:Review Chapters 10 and 11 of the Frankfort-Nachmias & Leon-Guerrero course text and the media program found in this week’s Learning Resources related to bivariate categorical tests.Create a research question using the General Social Survey dataset that can be answered using categorical analysis.By Day 3Use SPSS to answer the research question. Post your response to the following:What is your research question?What is the null hypothesis for your question?What research design would align with this question?What dependent variable was used and how is it measured?What independent variable is used and how is it measured?If you found significance, what is the strength of the effect?Explain your results for a lay audience and further explain what the answer is to your research question.Be sure to support your Main Post and Response Post with reference to the week’s Learning Resources and other scholarly evidence in APA Style.

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