Category: Statistics

  • “Analyzing Regional Housing Market: A Statistical Comparison to National Averages”

    Overview
    In this project, you will apply inference methods for means to test your hypotheses about the housing sales market for a region of the United States. You will use appropriate sampling and statistical methods.
    Scenario
    You have been hired by your regional real estate company to determine if your region’s housing prices and housing square footage are significantly different from those of the national market. The regional sales director has three questions that they want to see addressed in the report:
    Are housing prices in your regional market lower than the national market average?
    Is the square footage for homes in your region different than the average square footage for homes in the national market?
    For your region, what is the range of values for the 95% confidence interval of square footage for homes in your market?
    You are given a real estate data set that has houses listed for every county in the United States. In addition, you have been given national statistics and graphs that show the national averages for housing prices and square footage. Your job is to analyze the data, complete the statistical analyses, and provide a report to the regional sales director. You will do so by completing the Project Two Template located in the What to Submit area below.
    please send findings in excel on graphs in excel,

  • Completing Modules for Week 7 in Chamberlain Portal Title: “Navigating and Completing Modules for Week 7 in the Chamberlain Portal”

    Please complete the following modules for week 7:
    https://chamberlain.instructure.com/courses/148328/modules/items/20990726
    https://chamberlain.instructure.com/courses/148328/modules/items/20990728
    https://chamberlain.instructure.com/courses/148328/modules/items/20990730
    https://chamberlain.instructure.com/courses/148328/modules/items/20990733
    https://chamberlain.instructure.com/courses/148328/modules/items/20990735
    User Name: D41268372
    Password:  Evans2023!!!!!!
    login to the portal and allow the system to call me and I will send you the verification code. 
    Thanks 

  • Title: Confirmatory Factor Analysis on Head Measurements: Comparing Two Models with Two Factors

    Export the R code and interpretations to word or pdf.
    Ignore the first column (it’s a grouping variable). The other six are head measurements taken from each subject:
    WDIM = head width at widest dimension
    CIRCUM = head circumference
    FBEYE = front-to-back measurement at eye level
    EYEHD = eye-to-top-of-head measurement
    EARHD = ear-to-top-of-head measurement
    JAW = jaw width
    The goal is to perform Confirmatory FA (CFA) on the 2 models with 2 factors described in the problem and decide which one is better. 
    For other problem information please look at the screenshot I uploaded.

  • Title: Regression Analysis of the Impact of COVID Status on Student Test Scores

    I am doing a Standard multiple(linear) regression based on the significant variables from my t-test results. I need someone to make sure that every step in the pdf file is attached below is followed regarding the regression model. Most particularly, I need someone to complete a 2-part write-up placed on separate slides on the PowerPoint (or on Microsoft Word). 
    We are given a data sheet based on student responses to questions concerning COVID Status and how student test scores were affected in the student population pre- and post-COVID in the form of pre-test AVE and post-test AVE variables. The dependent variable in this case is the post-test AVE. The controlling variable is pre-test coping 12. I have posted several tables created via the Jamovi program onto my powerpoint slides 26-35. I have also posted jpeg images of how I made the tables on Jamovi for further clarification.

  • “Exploring the Relationship between Social Media Use and Perceived Stress Levels: A Data Analysis Report” Title: “The Significance and Relevance of [Article Title]”

    Overview
    You will take part in several data analysis assignments in which you will develop a report using tables and figures from the IBM SPSS® output file of your results. Using the resources and readings provided, you will interpret these results and test the hypotheses and writeup these interpretations.
    INSTRUCTIONS
    • Copy and paste all tables and figures into a Word document and format the results in the
    current APA edition.
    • Interpret your results.
    • Final report should be formatted using APA style, and in a Word document.
    • 4-5 double-spaced pages of content in length (not counting the statistic page, title page or
    references).
    Complete the Additional Exercises on page 250. In addition, conduct a short literature review
    relevant to the assignment (3 articles). You should find your own peer reviewed articles.
    INSTRUCTIONS
    As doctoral students, your assignments are expected to follow the principles of high-quality
    scientific standards and promote knowledge and understanding in the field of criminal justice.
    You should apply a rigorous and critical assessment of a body of theory and empirical research, articulating what is known about the phenomenon and ways to advance research about the topic under review. Research syntheses should identify significant variables, a systematic and reproducible search strategy, and a clear framework for studies included in the larger analysis.
    Manuscripts may be written in first person (“I”).
    All manuscripts should be clearly and concisely written, with technical material set off. Please do
    not use jargon, slang, idioms, colloquialisms, or bureaucratese. Use acronyms sparingly and spell them out the first time you use them. Please do not construct acronyms from phrases you repeat frequently in the text.
    Structure of Assignment Paper
    1. Use the following structure for your research article: Introduction, Literature
    Review/Theory, Methods, Results, Discussion, and Conclusion. Include a robust
    discussion section distinct from your conclusion. 2. Give your article a Title that is both descriptive and inviting to prospective readers. Your
    article title should appeal to both scholars and practitioners. Use a shortened version of
    the main idea of your article in the title.
    3. In the Lit Review/Theory, cite only literature and theory pertinent to the specific issue
    and not those that are of only tangential or general significance. When summarizing
    earlier works, avoid nonessential details; instead, emphasize pertinent findings, relevant
    methodological issues, and major conclusions. Citation of relevant earlier literature is a
    sign of scholarly responsibility and it is critical for the growth of a doctoral student in
    criminal justice.
    4. Methods: The Methods section “describes in detail how the study was conducted,
    including conceptual and operational definitions of the variables used in the study.
    Different types of studies will rely on different methodologies; however, a complete
    description of the methods used enables the reader to evaluate the appropriateness of your
    methods and the reliability and the validity of your results” (APA Style Guide 6th ed., p.
    29-32). Include a description of your sample size and procedure, participants, how data
    collected, and research design.
    5. Results include data analysis used, results of the analysis including tables and figures.
    6. Discussion section includes interpretations from the analysis. How do your analyses
    relate to the results found by scholars in your lit review/theory section. In this section,
    evaluate and interpret their implications, especially with respect to your original
    hypotheses.
    7. Provide a distinct Conclusion that tells readers what you found, why it is important, and
    what difference it will make for research and practice. Ensure you separate your
    discussion section from the conclusion of the article. Synthesize your article; do not
    summarize it. Show readers how the pieces of your article fit together. Answer the
    question “So what?” Why is your article significant, and how is it relevant?
    Note: Your assignment will be checked for originality via the Turnitin plagiarism tool.

  • “Exploring the Mimicry of Natural Neural Network Composition through Regression Models and Sigmoid Filters: An Application in Predictive Modeling”

    Figure 1 shows a typical composition of neurons in a net. This discussion questions aimed at learning how natural composition of neural nets can be mimicked to derive algorithms that can provide prediction at higher levels of complexity.
    Consider a multiple regression model of your choice containing two predictors. Calculate the values of the regression equation with a range chosen by you for the values of the predictors. Provide the graph of the regression equation which is a plane.
    Augment your regression model by a sigmoid posterior filter. Calculate the values of the regression equation within the range chosen in part 1. Provide the graph of the regression equation, which will be a sigmoidal surface. Show that this graph cannot have a local extremum.
    Now, add another regression model with sigmoid posterior containing the same two predictors in the previous part. Repeat parts 1 and 2 for this new regression model. Now consider a model of a neural net, which has two parallel hidden layers, which are the two regression models considered above. The output of the net is simply the superposition of the two regression models. Show that by proper choice of the parameters you can have an output, which has a local extremum within the choice for the range of the values of the predictor. Provide the graph of the regression equation. How does this observation indicate an application of neural networks modeling in practice?
    PLEASE consider the word document below. I have done most of the homework – I need someone to review the file and generate the graphs as I have tried to generate them using Chatgbt (I don’t have an excel program on my Macbook) Please use Excel – I am open to any changes and recommendations
    Figure 1
    Typical Composition of Neurons in a Net

  • Hypothesis Testing Study on the Effectiveness of a New Pharmaceutical Regimen for Hypertension Treatment

    Initial Post Instructions
    Describe a hypothesis test study that would help your work or conclusions in some way. Describe what variable would be tested and what would be your guess of the value of that variable. Then include how the result, if the null were rejected or not, might change your conclusions or actions in some way.
    Follow-Up Post Instructions
    Respond to at least one peer. Further the dialogue by providing more information and clarification.
    Writing Requirements
    Minimum of 2 posts (1 initial & 1 follow-up)
    APA format for in-text citations and list of references
    Grading
    This activity will be graded using the Discussion Grading Rubric. Please review the following link:
    Link (webpage): Discussion Guidelines
    Course Outcomes
    CO 9: Given a sample dataset, construct and interpret the test of hypothesis for population mean or proportion.
    PLEASE RESPOND TO THIS POST
    Good afternoon class,
    I look like a healthy woman; however, I have not been healthy for the last two years. I am unsure if it is due to COVID, aging, or nursing, but I have become hypertensive. This an area that has been interesting to me to learn more about. I have been switched medications three times already. When Pertaining to the medical field hypothesis, test study factors will significantly impact clinical practice and look for ways to improve wellness. This, at times, involves testing the effectiveness of a new treatment plan for someone with chronic hypertension.
    This study used a randomized controlled trial to examine the effects of high vs normal blood pressure treatment on the outcomes reported by patients in people with hypertension. This article gives the latest information on aggressive blood pressure control results, focusing on the necessity of testing hypotheses in validating hypertension treatment treatments. This article gives a detailed examination of a hypothesis test research examining the impact of intense blood pressure treatment that’s relevant to investigating the efficacy of hypertension treatments to look into the effectiveness of a new pharmaceutical strategy compared to a usual treatment for lowering systolic blood pressure in people with high blood pressure.
    Dependent Variable: individuals’ systolic blood pressure (measured in mmHg). Independent Variable: Treatment with new pharmaceutical regimen vs. standard treatment for the treatments for 12 weeks time.
    At the start of the study, we measured the patient’s systolic blood pressure. Later on after 12 weeks of treatment, we analyzed the mean systolic blood pressure for each group . We used an independent samples t-test to compare the means of the two groups and along with the means and standard deviations of the two groups.
    Once the p-value was determined if the null hypothesis was rejected, the new medication plan was more effective than the traditional treatment in lowering systolic blood pressure. If the null hypothesis is not rejected, there is no significant difference between the new pharmaceutical regimen and the standard treatment.
    This, as a result, will determine whether the study continues or if the new med could lead to the new pharmaceutical regimen becoming a standard practice for treating hypertension. Further research will be done in order to explore the long-term benefits and potential adverse effects, knowing that it may improve treatment plans and patient outcomes. 
    Reference:
    Allen, N. B., Yancy, C. W., et al. (2022). Intensive Blood Pressure Control and Cardiovascular Disease Outcomes in Patients with Hypertension: A Systematic Review and Meta-Analysis. Journal of the American College of Cardiology, 79(15), 1520-1530. https://doi.org/10.1016/j.jacc.2022.02.018
    Margolis, K. L., Grimm, R. J., Sperl-Hillen, E. G., et al. (2015). Effect of Intensive Blood-Pressure Treatment on Patient-Reported Outcomes. New England Journal of Medicine, 373(22), 2103-2116. https://doi.org/10.1056/NEJMoa1511177

  • Title: Utilizing Linear Programming for Optimization: A Case Study of Company XYZ

    In your paper,
    Describe how and why your chosen business example deployed linear programming.
    Analyze the method of linear programming used by your chosen company. Did it work in their favor? Would you recommend a different methodology?
    Explain how the business used linear programming to optimize resources like budget, time, people, and/or machinery.
    List the benefits that this business received as a result of deploying linear programming.
    The Linear Programming paper,
    must be two to three double-spaced pages in length (not including title and references pages, charts or tables), and formatted according to APA Style
    must include a separate title page with the following:
    title of paper in bold font
    Space should appear between the title and the rest of the information on the title page.
    student’s name
    name of institution (The University of Arizona Global Campus)
    course name and number
    instructor’s name
    due date
    must utilize academic voice. Review the Academic Voice
    must include an introduction and conclusion paragraph.
    Your introduction paragraph needs to end with a clear thesis statement that indicates the purpose of your paper.
    For assistance on writing Introductions & Conclusions
    must use at least one credible source in addition to the course text.
    The Scholarly, Peer-Reviewed, and Other Credible SourcesLinks to an external site. table offers additional guidance on appropriate source types. If you have questions about whether a specific source is appropriate for this assignment, please contact your instructor. Your instructor has the final say about the appropriateness of a specific source for a particular assignment.
    To assist you in completing the research required for this assignment, review Quick and Easy Library Research.
    must document any information used from sources in APA Style 
    must include a separate references page that is formatted according to APA Style

  • “Exploring the Power of Data Analytics in Business: Key Takeaways from Chapters 15 and 17”

    Prior to beginning work on this journal:
    Read Chapters 15 and 17 in your textbook, Business Analytics: Communicating with Numbers, 2e. (snips of chapter pages attached)
    The journal’s intent is for you to apply what you have learned to reflection on how data analytics can be applied to business. Write a reflective journal of the three most important takeaways contained in chapters 15 and 17 of your textbook. Your journal should be between two to three pages excluding cover and reference page. 

  • “Unlocking the Potential: A Statistical Analysis of North Valley Real Estate for Improved Business Decision Making”

    Using the statistical analysis and summarized results from Part 1 and Part 2 of the North Valley Real Estate Case Study, finalize your findings and interpretations in a formal 1,000-word report, not including a title page or reference list. A minimum of five references from the spectrum of academic sources (books, magazines, journals, periodicals, newspapers, videos, etc.) is required. Reference the “North Valley Real Estate Case Study Final Report Template,” provided in the Class Resource called “SYM-506 North Valley Real Estate Case Study,” for assistance with completing your final report in APA style.
    Your final report should include the following sections:
    Introduction:
    Describe the background of the company, including the key data and variables, and state the purpose of the analysis.
    Analysis:
    Include the descriptive and inferential statistical analysis you conducted in Part 1 and Part 2 of the assignment using the company’s data.
    Include tables, charts, and graphs in APA format:
    Provide the results in a brief summary in this section. Tables are useful.
    Interpretation of Results:
    Interpret your findings to improve business decision making and increase profitability and business activities for North Valley Real Estate.
    Include a discussion of the real estate industry and the impacts that influence the health, viability, and success of the real estate marketplace.
    Conclusion:
    In the conclusion of your paper, include a brief statement reflecting on what you feel you have learned from the assignment and how that learning may be applied to your life or work going forward.
    Discuss any Christian worldview or ethical implications in using and presenting statistics to make business decisions.