About Take-Home Quizzes

Overview

Quiz #1: Wednesday, February 3, 2:30PM Pacific - Friday, February 5, 1:00PM Pacific


Quiz #2: Wednesday, February 24, 2:30PM Pacific - Friday, February 26, 1:00PM Pacific


Quiz #3: Wednesday, March 17, 2:30PM Pacific - Friday, March 19, 1:00PM Pacific



About Quizzes

Each quiz will be a 46.5-hour open book, open note exam. Quiz material will approximate about 1-2 hours of active work (depending on your preparation and process---some students take an additional 1-2 hours to typeset or write up final versions), and we give you the full time to work on each quiz to reduce time pressure and accommodate any difficulties accessing resources during your quiz time.

Unlike the problem sets, the take-home quizzes are strictly individual work. Even course staff assistance will be limited to clarifying questions of the kind that might be allowed on a traditional, in-person exam.

If you have questions during the exam, please ask them as a private question via our discussion forum. Teaching staff cannot answer any exam or problem set questions during office hours while the quiz is in progress.

Learning Goals

These quizzes are intended as checkpoints for yourself for how well you understand the concepts in this class. By giving you ample time to access course resources, we hope this experience will help you structure your learning for the rest of the quarter.

Honor Code Guidelines

The take-home exams are open-book (open lecture notes, handouts, textbooks, course lecture videos, and internet searches for conceptual information, e.g., Wikipedia). Consultation of other humans in any form or medium (e.g., communicating with classmates, asking questions on forum websites such as StackOverflow) is prohibited. All work done with the assistance of any external material in any way (other than provided CS109 course materials) must include citation (e.g., "Referred to Wikipedia page on DeMorgan's Law for Question 2."). Copying solutions is unacceptable, even with citation. If by chance you encounter solutions to the problem, navigate away from that page before you feel tempted to copy. If you become aware of any honor code violations by any student in the class, your commitments under the Stanford Honor Code obligate you to inform course staff. Please remember that there is no reason to violate your conscience to complete a take-home exam.

Submission

The exam will be posted on this webpage at the start time (Pacific time) the day the exam begins. You will upload and submit your submission as a PDF to Gradescope. Just like we do for homework, we will provide a LaTeX template if you find it useful, but we will accept any legible submission.

The Quiz Gradescope assignment portal will also be published at the start time the day the exam begins. You can submit multiple times, but we will only grade the last submission submitted by the end time listed for the exam.

No exam submissions will be accepted late. Please double-check that you submit the right file. Please tag your questions. Incorrectly tagged submission PDFs will have a 2-point deduction.

If you encounter an issue during the exam period that prevents you from completing the exam, please email Jerry or Chris immediately so that we can work with you to resolve the issue.

Quiz #1 Specifics

Material covered: Quiz #1 will cover all material through and including Lecture 6 (random variables). This includes everything on Problem Sets 1 and 2.

Review session: Tim and Emma, two of our wonderful TAs for CS109 this quarter, will hold a review session on Monday, February 1st, 7pm Pacific. Zoom recording and review session materials will added below.

Practice material: Previous iterations of this course have had a midterm that may have covered slightly different material than you are responsible for. To help you practice the concepts for our Winter 2021 Quiz #1, we have provided these previous midterms in whole. Feel free to post on Ed to clarify whether a certain question from a practice midterm covers material that will be on this quiz.

Quiz #2 Specifics

Material covered: Quiz #2 will cover all material through Lecture 15, Slide 16. In particular, Lecture 15's discussion of joint continuous random variables will not be covered. All of Problem Set 3 is fair game, and all of Problem Set 4, save for the problems involving joint continuous distributions and double integration, is fair game as well.

Review session: Anand and Grace, two equally wonderful TAs this quarter, will hold a review session on Monday, February 22nd, 7pm Pacific. Zoom recording and review session materials will added below.

Practice material: A combination of the exams posted from last time and previous final exams. All relevant problems are marked below.

Quiz #3 Specifics

Material covered: Quiz #3 will cover all material through Lecture 26 (logistic regression). This includes everything on Problem Sets 5 and 6.

Review session: In place of a separate review session, your section leader will run a review session during your last section in Week 10. Slides and/or additional materials will be posted via the Section tab on the top navigation bar.

Practice material: A combination of the exams posted from last time and previous final exams. All relevant problems are marked below.

Essential Practice

  • Practice Midterm [Soln]
    • Quiz #1 Practice: 1, 3a, 6 (note: the last problem is more challenging than what you will see on your exam)
    • Quiz #2 Practice: All of the exam, in particular 2, 3b, 4, 5 (the problems that were not covered with Quiz 1)
  • Midterm Spring 2017 [Soln]
    • Quiz #1 Practice: 1, 2, 3
    • Quiz #2 Practice: 1, 2, 3, and 6
    • Quiz #3 Practice: 4 and 5
  • Midterm Spring 2016 [Soln]
    • Quiz #1 Practice: 1, 2ab, 3
    • Quiz #2 Practice: Everything except 4c and 5.
    • Quiz #3 Practice: 4c, 5
  • Practice Final [Soln] - Note that the practice exam is intended to be challenging!
    • Quiz #2 Practice: 1, 2, 3, 4, 6, 7
    • Quiz #3 Practice: In particular 5, 8, 9

Extra Practice

Review Materials

These review materials were put together by Alex Tsun, a CS109 TA back in Spring 2019. These materials may cover slightly different material than you are responsible for. For the first quiz, only need to learn what is in the lecture notes/slides through random variables.

Review Session 1

Review Session 2

Review Session 3

You can do it!

Credits: Wording for Honor Code Guidelines from CS103 Spring 2020, taught by Cynthia Bailey Lee and David Varodayan.