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Linear Regression Exercises

Simple Regression
Research Question: Does the number of hours worked per week (workweek) predict family income (income)? 
Using Polit2SetA data set, run a simple regression using Family Income (income) as the outcome variable (Y) and Number of Hours Worked per Week (workweek) as the independent variable (X). When conducting any regression analysis, the dependent (outcome) variables is always (Y) and is placed on the y-axis, and the independent (predictor) variable is always (X) and is placed on the x-axis.
Follow these steps when using SPSS:
1. Open Polit2SetA data set.
2. Click on Analyze, then click on Regression, then Linear.
3. Move the dependent variable (income) in the box labeled “Dependent” by clicking the arrow button. The dependent variable is a continuous variable.
4. Move the independent variable (workweek) into the box labeled “Independent.”
5. Click on the Statistics button (right side of box) and click on Descriptives, Estimates, Confidence Interval (should be 95%), and Model Fit, then click on Continue.
6. Click on OK.
Assignment: Through analysis of the SPSS output, answer the following questions. Answer questions 1 – 10 individually, not in paragraph form
1. What is the total sample size?
2. What is the mean income and mean number of hours worked?
3. What is the correlation coefficient between the outcome and predictor variables? Is it significant? How would you describe the strength and direction of the relationship?
4. What it the value of R squared (coefficient of determination)? Interpret the value.
5. Interpret the standard error of the estimate? What information does this value provide to the researcher?
6. The model fit is determined by the ANOVA table results (F statistic = 37.226, 1,376 degrees of freedom, and the p value is .001). Based on these results, does the model fit the data? Briefly explain. (Hint: A significant finding indicates good model fit.)
7. Based on the coefficients, what is the value of the y-intercept (point at which the line of best fit crosses the y-axis)?
8. Based on the output, write out the regression equation for predicting family income.
9. Using the regression equation, what is the predicted monthly family income for women working 35 hours per week?
10. Using the regression equation, what is the predicted monthly family income for women working 20 hours per week?
For this assignment, answer question 1 through 10 individually. DO NOT ANSWER IN PARAGRAPH FORM.
Multiple Regression
Assignment: In this assignment we are trying to predict CES-D score (depression) in women. The research question is: How well do age, educational attainment, employment, abuse, and poor health predict depression?
Using Polit2SetC data set, run a multiple regression using CES-D Score (cesd) as the outcome variable (Y) and respondent’s age (age), educational attainment (educatn), currently employed (worknow), number, types of abuse (nabuse), and poor health (poorhlth) as the independent variables (X). When conducting any regression analysis, the dependent (outcome) variables is always (Y) and is placed on the y-axis, and the independent (predictor) variable is always (X) and is placed on the x-axis.
Follow these steps when using SPSS:
1. Open Polit2SetC data set.
2. Click on Analyze, then click on Regression, then Linear.
3. Move the dependent variable, CES-D Score (cesd) into the box labeled “Dependent” by clicking on the arrow button. The dependent variable is a continuous variable.
4. Move the independent variables (age, educatn, worknow, and poorhlth) into the box labeled “Independent.” This is the first block of variables to be entered into the analysis (block 1 of 1). Click on the bottom (top right of independent box), marked “Next”; this will give you another box to enter the next block of indepdent variables (block 2 of 2). Here you are to enter (nabuse). Note: Be sure the Method box states “Enter”.
5. Click on the Statistics button (right side of box) and click on Descriptives, Estimates, Confidence Interval (should be 95%), R square change, and Model Fit, and then click on Continue.
6. Click on OK.
Assignment: (When answering all questions, use the data on the coefficients panel from Model 2). Answer questions 1 – 5 individually, not in paragraph form
1. Analyze the data from the SPSS output and write a paragraph summarizing the findings. (Use the example in the SPSS output file as a guide for your write-up.)
2. Which of the predictors were significant predictors in the model?
3. Which of the predictors was the most relevant predictor in the model?
4. Interpret the unstandardized coefficents for educational attainment and poor health.
5. If you wanted to predict a woman’s current CES-D score based on the analysis, what would the unstandardized regression equation be? Include unstandardized coefficients in the equation.
For this assignment, answer question 1 through 5 individually. DO NOT ANSWER IN PARAGRAPH FORM.
Required Readings
Gray, J.R., Grove, S.K., & Sutherland, S. (2017). Burns and Grove’s the practice of nursing research: Appraisal, synthesis, and generation of evidence(8th ed.). St. Louis, MO: Saunders Elsevier.

  • Chapter 24, “Using      Statistics to Predict”

This chapter asserts that predictive analyses are based on probability theory instead of decision theory. It also analyzes how variation plays a critical role in simple linear regression and multiple regression.
Statistics and Data Analysis for Nursing Research

  • Chapter 9, “Correlation and      Simple Regression” (pp. 208–222)

This section of Chapter 9 discusses the simple regression equation and outlines major components of regression, including errors of prediction, residuals, OLS regression, and ordinary least-square regression.

  • Chapter 10, “Multiple      Regression”

Chapter 10 focuses on multiple regression as a statistical procedure and explains multivariate statistics and their relationship to multiple regression concepts, equations, and tests.

  • Chapter 12, “Logistic      Regression”

This chapter provides an overview of logistic regression, which is a form of statistical analysis frequently used in nursing research.
Optional Resources
Walden University. (n.d.). Linear regression. Retrieved August 1, 2011, from http://streaming.waldenu.edu/hdp/researchtutorials/educ8106_player/educ8106_linear_regression.html

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Challenges In Identifying Mental Disorders

Most mental disorders lie on a continuum with “normal” behavior at one end. For example, nearly everyone has a fear of something, but it does not rise to the level of a phobia. A behavior may seem abnormal in one context but completely normal in another context. These two aspects show why it can be challenging to properly identify mental disorders.
Using your textbook and the Argosy University online library resources, research the principles and methods of identifying mental disorders. Note particularly the diversity of views and the challenges of identification. Based on your research, write a reflective essay. Use the following question to direct your thoughts and organize your essay:

  • Why is determining abnormal behavior or a mental disorder so difficult?

To develop your essay, keep in mind issues such as the role of social norms in defining the abnormal, the multiplicity of indicators of what is abnormal, the stigma suffered by those identified as abnormal, and finally the need for objectivity in dealing with the concept.

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Developmental Psychology Research Designs

Developmental Psychology Research Designs
In developmental psychology, the focus of research is often to examine change over time. Developmental psychologists have some special research designs that allow them to accomplish this. Two such research designs are the cross-sectional design and the longitudinal design. A cross-sectional design measures different groups of people of different ages at the same time. A longitudinal design measures the same group of people at different ages and also, therefore, at different times.
Use your textbook and the Argosy University online library resources to identify and research a topic in adult development (e.g., memory, muscle strength, etc.) that you wish to examine across various age agroups. Develop an outline for either a cross-sectional or longitudinal research design. Write  a paper consisting of the following information:
· An introduction to the topic you selected, including a summary of at least one peer-reviewed journal article describing recent research (post 2005) on the topic;
· A description of  how you will measure the topic of study (e.g., the dependent variable).
· A description of  which type of design will be used and why that would be most appropriate. Also identify what age groups will be studied.
· On the basis of your readings and research, provide a prediction of what you expect to find upon completion of your study.
Apply APA standards to citation of sources. Your paper should be double-spaced with one-inch margins, written in APA style, and free of typographical and grammatical errors.  It should include a title page with a running head and a reference page. The body of the paper should be 3-5 pages in length.
By the due date assigned, deliver your assignment to the Submissions Area.

Assignment 3 Grading Criteria Maximum Points
Provided an introduction to the topic selected. 12
Provided a summary of at least one peer-reviewed journal article describing recent research (post 2005) on the topic. 12
Developed a valid, feasible outline for research design, with details on participants and variables. 28
Explained rationale of research design demonstrating adequate research on topic. 20
On the basis of the readings and research conducted, provided a prediction of the results. 8
Wrote in a clear, concise, and organized manner; demonstrated ethical scholarship in accurate representation and attribution of sources; displayed accurate spelling, grammar, and punctuation.
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STRАTЕGIС SUРРLY СHАINS MАNАGЕMЕNT

Assessment Item 3 – Project (Individual)
Task: Assessment 3 consists of analytical problems that students need to solve and comment on individually. These problems have been designed to assess the students’ capability in solving real world supply chain management problems. The maximum length of report shall be 4000 words including reference.
 
This task involves two parts.
 
Part 1– Analysing and solving a supply chain management problem (e.g. distribution related problem, procurement related problem, supply chain sustainability related problem, information related problem, or issues such as additive manufacturing, 3D printing, IoT, cloud computing, blockchain etc.) of a company or a number of companies (a number of companies may face similar problem for example many companies face problem with supply chain sustainability from their supplier side) and develop a report following HBR article style writing (sample HBR article uploaded) (30 marks).
 
 
Assignment Submission structure:
 
For part 1 the assignment structure should be as follows:

  1. Executive Summary
  2. Content, analysis etc of the Case study
  3. Recommendations, conclusion and managerial Implications
  4. References and Appendices, if any

For Part 1 of assessment 3 please follow HBR article format as you will be judged on the 5 criteria’s listed above.
 
Assignment Submission format:

  • Use Font 12 Calibri with single line spacing and submit the Microsoft Word file only.
  • Max word count is 4000 words inclusive of references.
  • For the assessment follow HBR level of academic rigour as per HBR wesbite.
  • Your focus should be on SSCM components e.g. network design, warehousing, distribution, logistics, sourcing, risk management, sustainability, use of emerging technology etc into your analysis.
  • You can select a specific industry and build your argument around it. Examples of industries could be automotive, aerospace, biomedical, tourism, fashion, apparel manufacturing, resource sector, etc. or you can base your essay on SSCM general industry trends or a recent industry topic as long as it is topical and contemporary.
  • Marking Criteria See Marking Criteria sheet for respective components based on which marks will be allocated and feedback will be provided.

Assignment Due date and submission procedure:
Due date- See the outline
Submission procedure- Turnitin submission
 
Individual Presentation Marking Criteria:
A good professional presentation is short, interesting, and delivered without notes or use of palm cards. You might like to consider the following as you set up the slides for your presentation.

  • Your presentation should take a max of 7 minutes inclusive of Q&A.
  • Assessment marking criteria for the presentation includes your timely presence and attendance in class, your in-depth preparation of the topic prior to coming to class, use of innovative and creative techniques when facilitating and a quality discussion with evidence that the discussion was well structured including counter perspectives and led in an equitable, respectful and informed involvement by all participants, and using content sourced from other sources.

See Marking Criteria rubric sheet based on which marks will be allocated and feedback will be provided.

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You want to launch a business internationally, and you need to choose 3 countries—1 in the Middle East, 1 in Asia, and 1 in Latin America.

You want to launch a business internationally, and you need to choose 3 countries—1 in the Middle East, 1 in Asia, and 1 in Latin America.
What are some of the components of these cultures that you need to understand from a business standpoint?
How are they different in each country? Specifically, what considerations will be necessary to facilitate collaboration across these cultures? Identify supervisory skills appropriate to respond to your considerations.
Can you have a U.S. management style in these countries? In support of your answer, show how various issues would influence the success of multicultural teamwork.
How are their economic systems classified? Explain why they are classified as such.
After studying these countries, explain whether you should or should not move forward with your business plan.

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6-2 Case Study Analysis: Haier- A Global Chinese Firm Leverages "Distance"

Over the past 30 years, the Haier Group, China’s leading appliance manufacturer, rose from the ashes of an obsolete Shangdong factory to become the world’s leading major appliances brand in 2012. With 2012 earnings reaching $25.8 billion, Haier was unique among emerging market firms: Instead of relying just on exports based on low production cost, it established overseas factories integrating “localized R&D, localized manufacturing and localized marketing” to continuously create demand in overseas customers, thus establishing Haier’s international brand name. CEO Zhang Ruimin has set Haier’s sights on additional market penetration in both developed and emerging markets, but must address intensifying competition at home as well.
Researching Haier’s global operations and strategic ventures over the past several years, answer the following:

  1. Characterize Haier and its industry.
  2. Discuss Haier’s entry timing, location selection, and modes of entry in light of the module’s concepts and vocabulary.
  3. Was Haier able to leverage differences between its home and foreign institutional environments?
  4. What are the strategic imperatives for action for Haier to successfully balance its international expansion with its need to deepen its home country competitiveness?

Suggested Resources:
Haier 2012 Annual Report and company website
Library Databases:

  • Company information: OneSource and MarketLine
  • Industry information: Net Advantage and MarketLine
  •  Allowed to use only the market line and the company website as resources.
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Identity Development-psychology

Among the different perspectives on development is Erik Erikson’s theory, which we will refer to throughout the course. This theory examines development during every stage of the human lifespan and focuses on a central issue or conflict that should be resolved at each stage. In this assignment, you will be asked to consider development during adolescence and its impact on adult development.
Review Erikson’s stage of identity versus identity confusion in your readings for the module. Respond to the following:
Is identity development ever complete? Why or why not?
What are the signs that someone has reached identity achievement?
In your own life, what are some of the challenges you have faced in trying to establish your own identity?
Support your arguments with research, citing sources.
Write your initial response in 150–200 words. Apply APA standards to citation of sources