Exam 1

About The Midterm

• Course content tested: chapters 9, 11, & 12 in the MS textbook; content presented in modules 1-7
  • This includes table of counts and their analyses using the chi-square test, fisher exact test, and proof of confidence intervals.
  • For regression, it is expected that you know and have memorized the basic results: S^2, F_calc for the global and hierarchical tests, projection, and beta hat formulae as well as the fitting of models to data using the lm() function and its methods.
• Exam Format: You will complete the questions and upload your answer file. Review the "Directions" section below for details.
  
• Time limit: 60 minutes to take the exam + 15 minutes for uploading
  
• Number of attempts: 1

Objectives

You must be able to use the following theory and procedures:

• All functions used in conjunction with Chapter 9 including those from s20x R package
• Perform chi-square tests appropriately on tables of counts
• Fitting models to data 
  • Using global F-tests
  • Using Hierarchical F-tests
  • T-tests for betas
• Discern and identify the different models
• Use interaction well 
• Interpret coefficients 
• Make plots and summary tables

Directions

• Use an RMD document and place all R code in chunks.
  • Please place any extended proof on paper and add to RMD with ![](){} using a picture.
• Knit to HTML and upload this document (the HTML) on CANVAS.
• You may not open anything except Canvas (for the questions) and your R Studio application. In addition, you may use R's help files.
  • You will need R studio running with the package s20x installed. Be sure it is installed before you start the exam.

Assessment

A 100-point rubric will be used to assign points to your exam. There will be 3 questions covering various topics from Modules 1-7. You will be given 60 minutes to complete the exam. There will also be 15 minutes allotted to upload the final HTML file to Canvas.

Academic Integrity

• Closed book—You must not use any resources other than R studio, the Canvas page holding the exam, and R's help files
• All work should be yours only
• No conversing with other students during the exam