Exam 01

Week 07, Spring 2022


Exam week! No class on Wednesday or Friday to make up for the exam time.


No new reading this week! Review the exam information below.


Title Link Mirror
7.0 - Welcome to Week 07 7.0 - YouTube 7.0 - ClassTranscribe


Assignment Deadline Credit
Exam 01 Thursday, March 3 100%
Practice Exam 01 NA NA

Office Hours

Staff and Link Day Time
Zoom with David Monday 3:00 PM - 4:00 PM
Zoom with Tyler Tuesday 12:00 PM - 2:00 PM
Zoom with Lia Tuesday 2:30 PM - 4:30 PM
Zoom with Earl Wednesday 10:00 AM - 12:00 PM
Zoom with David Wednesday 5:00 PM - 7:00 PM
Zoom with Linjun Wednesday 7:00 PM - 9:00 PM
Discussion Forum Any! Any!

Exam Information

Please read all of the following carefully.

Date and Time

Regular Exam

  • Date: Thursday, March 3
  • Time: 7:00 PM - 8:50 PM, Champaign Time

Conflict Exam

  • Date: Friday, March 4
  • Time: 8:00 AM - 9:50 AM, Champaign Time

To take the conflict exam, you must send an email to the instructor that properly follows the email policy by Wednesday, March 2, 11:59 PM, Champaign time. Use the following subject line:

  • [STAT 385] Conflict Exam, netID

netID should be replaced by your netID. Failure to follow this step correct could result in not being granted a conflict.

First and foremost, conflicts will be approved for any students who are in a time zone that is significantly different than Champaign’s. Additional conflicts will be considered if there is sufficient reasoning. A desire for additional time to study is not sufficient. Conflicts with University required events such as a course lab will be approved. Please keep your emails concise and to the point. (Think three sentences or less. No need to greet me or introduce yourself.) Note that submitting a conflict request does not guarantee approval. You will receive an email with the decision (approved or denied) within one business day of submission.


The exam will be administered through PrairieLearn and proctored by the course staff via Zoom and PrairieTest.

Please read the PrairieTest documentation for online Zoom exams! This documentation will explain the process of using PrairieTest and Zoom for the proctoring and administration of the exam.

Be sure to use the Zoom link provided via PrairieTest, which is released when the exam starts, to join the meeting. Also, be sure to sign in to Zoom via SSO using your Illinois netID and password.

The exam will consist of some number of coding questions. Please do not ask for the specific number as it is not relevant. One question could take three hours. Ten questions could take 30 seconds.

Unlike quizzes, you will not have unlimited attempts at each question. Additionally, you will only ever have one variant of a question, that is, follow-up attempts will not have any random elements change. However, different students will have different randomly generated questions.

You will have five attempts for each coding question:

  • The first two attempts will grant 100% credit.
  • The remaining three attempts will grant decreasing credit: 80%, 60%, 40%

You will have three attempts for each checkbox question:

  • The first attempt will grant 100% credit.
  • The remaining two attempts will grant decreasing credit: 75%, 50%

Like quizzes, partial credit is possible by passing the various test cases. Don’t worry too much about how this interacts with the credit ranges above. Importantly know that you score can never go down.

Because of this structure, it is imperative that you self test your code in RStudio before submitting to PrairieLearn. You’ve been warned.


All relevant portions of The Student Code regarding Academic Integrity applies. In short, do not cheat. Any violation will be punished as harshly as possible.

Once the exam has started, do not post on the discussion forum about the exam until after the instructor informs the course that it is safe to do so. There may still be students who need to take the exam after you have finished your exam.

Do not:

  • Have someone else in the room with you. If this is impossible, let your proctor know at the beginning of the exam and refrain from talking with other people.
  • Turn your video off on Zoom.
  • Leave the room.
  • Access prohibited sites or applications on your computer.
  • Use your phone for anything other than testing purposes.
  • Use a virtual background.


  • Enter the Zoom meeting 15 minutes before the start of the exam.
  • Make sure your display name is correct. (We need to know who you are!)
  • Have your paper, writing utensils, and any other course-approved supplies you need within reach.
  • Ask the proctor any questions you have. Just wave at your camera, then use the private chat on Zoom.
  • If you enter the meeting after testing has started, use private chat on Zoom so as not to disturb others.
  • Stop working when time is called.

Exam Content

The exam will cover all material up to and including the material on Quiz 04 and Lab 04.



  • Laptop or desktop computer.
  • High-speed internet connection.
  • Phone, tablet, or other device with camera used for proctoring.


  • Secondary or external monitors if they can be visible to the proctor via Zoom.
  • Materials on the course website.
  • Materials directly linked to the course website.
  • R and R RStudio locally installed on your computer or through RStudio Cloud.
  • R documentation accessed through R or RStudio.
  • Blank scratch paper.

Because you are using your own computer for this exam, you should be sure that your R and RStudio are setup and ready to go. In general, if you were able to complete the quizzes, your setup is ready to go. In particular, you should be use to have an up-to-date version of R installed, at least R version 4.1.2.


  • Any previous R scripts you have written.
  • Previous quizzes.
  • Any handwritten or paper notes.


If you encounter issues with R, remember this:

Many technology issues in STAT 385 can be solved by simply restarting R and RStudio.

If you feel that the correct answer is not accepted for a particular question, you must do both of the following:

  1. Submit an issue describing why your answer is correct using the “Report an error in this question” button.
  2. Submit your code to obtain your answer using the “Attach text” button on the right side of the screen. Do not attach a file, use the attach text feature.

Questions that are disputed after the exam that do not have the relevant code and issue description (properly separated) to support your claim will likely be ignored. While errors in creating the questions are certainly possible, it is generally more likely that you simply do not understand the question. It is a better strategy to simply move on to another question than to worry about a single question for a long time.

DRES Accommodations

If you have accommodations identified by the Division of Rehabilitation-Education Services (DRES) for exams, please email your Letter of Accommodations to the instructor, even if you have already done so at the start of the semester. This will ensure the proper accomodations are entered for the exam.