MAT 300 Final Project Guidelines and Grading Guide

MAT 300 Final Project Guidelines and Grading Guide
The final project for this course is the creation of a statistical regression report. Based on the knowledge obtained in this course and previous course
work, you will examine the methodology used in building and performing regression diagnostics. You must select a statistical data source with
approval of your instructor. You must collect data, perform regression diagnostics, and determine the most appropriate set of predictors. The project
is divided into two milestones, which will be submitted at various points throughout the course to scaffold learning and ensure quality final
submissions. These milestones will be submitted in Module Three and Module Seven.

To successfully complete this project, you will be expected to apply what you have learned in this course and should include several of the following
course outcomes:
1. Construct multiple regression models, including first-order, second-order, and interaction models with both quantitative and qualitative
2. Assess whether a multiple regression model fits the sample data
3. Implement regression analysis in real-world problems from engineering, sociology, psychology, science, or business
4. Identify potential problems one may encounter when conducting regression analysis
5. Demonstrate how residuals may be used to detect departures from model assumptions

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Main Elements
In the Final Project you will build and perform regression diagnostics on several models in order to determine the most appropriate set of predictors
and subsequently the most appropriate model. You must choose a topic of interest drawn from real-life experiences. You must collect data for this
project and complete the following:

Identify your variables, and categorize your response and predictors (qualitative and quantitative predictors).
You must produce a scatterplot of the outcome variable versus each of the predictors.
Conduct a first-order main effects model.
Conduct an analysis of the model using regression diagnostics to determine whether the model is appropriate.
Determine which additional terms (higher-order or interaction) should be included. You may go through several iterations of this process
before you decide on your final model. Your final model must have at least one quantitative variable and one qualitative variable.
Perform a nested F-test on your final model and a reduced model of your choice to show that the final model is the better one.

Use your findings from the above model building and resulting analysis and write a paper summarizing your findings. Include relevant Minitab output
(charts, graphs, regression results) in your statistical regression report. Refer to module content and the case studies in your text for additional
resources. Your paper must including the following parts:


Introduction: Include your topic, your variables, an overall description of your data, the means of collecting data, and what you hope to
achieve in your findings. Include any predictions as needed.


Regression Model Building: Describe the results of the model you built. You must include the following information about both the firstorder main effects model and the final model:

A scatterplot of the outcome vs. predictor variables
The model equation in general form
The complete regression output from Minitab including any unusual predictors
A written explanation of why the model was/was not chosen (i.e., why those predictors were selected)
The R2 value and its interpretation
Regression diagnostics and your impression of them
The interpretation of each of the coefficients included in the final model


Testing Model and Comparison of Models: Looking at your variables, only include those variables that are necessary. Conduct a reduced
model as needed. Perform a nested model F-test on your final model compared to the researcher’s suggested model. Explain why the
outcome of this test shows that your model is the more appropriate one. Compare and contrast the original model and the final model and
discuss the strengths or weaknesses of both based on R2 and the regression diagnostics. Also comment on the importance of an iterative
model-building process. Particularly pay attention to the reasons why it is imperative that each model built is carefully examined. What are
the implications of just using the first model built?


Conclusion: Interpret your results in context of your topic.

Milestone One: Topic & Introduction Due
In Task 3-5, you will submit your topic and Introduction for instructor approval. This is non-graded milestone for formative feedback only.
Milestone Two: Final Project: Submit
In Task 7-3, you will submit your final project for review. This will be graded using the below rubric.

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