STAB22: An Introduction to Statistics

Winter 2015 

Olga Chilina, Srishta Chopra
Course coordinator: Ken Butler

Course outline
Course schedule
What Statistics and STAB22 is about
Lecture notes for section 1 on Blackboard; lecture notes for sections 2 and 3.
MyStatLab and StatCrunch: what they are and how to access them along with a blurb about StatCrunch and some info about getting started.

Statistical tables (as a spreadsheet) or the tables you'll get on the exam.
Old exams

Got a question? Read the FAQ first.
Graphic syllabus
Text and software
Where are my classes? Tutorial rooms and times can change without notice.
Contact us


If you are reading this, you have found your way to the winter 2015 STAB22 home page. Welcome!

Below: Olga Chilina, Srishta Chopra (and husband).

Use the links to the left to navigate, or to get in touch with us.

News is here

  • 2015-03-26 18:00: here's where you have to be for the final exam, which is Thursday April 23, 7:00-10:00:
    Last name starts withRoom
    ASW 128
    B-ChuSW 309
    Ci-U(old) gym
    V-ZSW 319
    Last name starts withRoom
    ASW 128
    B-ChuSW 309
    Ci-U(old) gym
    V-ZSW 319
  • 2015-03-15 20:30: no quizzes, but all tutorials should be going ahead except 7, 10 and 26.
  • 2015-03-15 20:30: sorry, no office hours tomorrow. Catch me on Thursday as usual, or maybe on Wednesday around lunchtime.
  • 2015-03-10 11:30 (update 17:00): other than my note (just below) about tutorial 22 this week, the current status: all tutorials should go ahead except for tutorial 7 and 26 (definitely cancelled). Tutorial 12 didn't happen last week because the TA was late arriving, but should happen this week.
  • 2015-03-10 11:30: tutorial 22 was cancelled today (the TA was sick). This tutorial will (if the TA is well) go ahead next week.
  • 2015-03-08 12:00: Updated apparently-going-ahead tutorial list: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 18, 19, 20, 21, 23, 24, 25, 28, 29.
  • 2015-03-05 20:00: there will be no quizzes next week.
  • 2015-03-05 20:00: there is no tutorial 17 tomorrow (Friday).
  • 2015-03-02 11:00 (edited 13:00 and 18:30): to my knowledge, these tutorials will go ahead: 1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 18, 19, 20, 21, 23, 24, 25, 28, 29. Other tutorials may or may not go ahead. I do not have definitive knowledge about that, and am not prepared to comment further until I have more information. All I can recommend is that you show up for your tutorial, but be prepared for it not to take place.

    A reminder that there are no quizzes until further notice.

    While the strike continues, you may attend any tutorial, but with the important proviso that if the room is full, the TA may ask you to leave. It is the TA's right and responsibility to do this, because classrooms all have a maximum capacity that the Fire Department will not allow us to exceed. If this becomes a serious issue, let me know and we will try to find bigger rooms where needed. However, at least 16 of the 28 tutorials are running, so I hope things will work out.

    Be prepared for things to be chaotic this week, while we work out what is going on.

    Expect instructors (and me) to hold extra office hours as necessary.

  • 2015-02-28 20:30: As of today, the TAs in our course are on strike. Until the dispute is resolved, your tutorial may or may not take place. At this moment, that is all I can say, but I hope to have more information on Monday.

    So as to be fair to all students, there are no quizzes until the Monday after the TAs return to work. This means that you will not be disadvantaged if your TA should choose to strike. (The reason for the "Monday after" thing is to ensure that all students write the same number of quizzes, as far as possible). Your course quiz grade will be determined from the quizzes that were written and marked. I will strive to ensure that everyone is treated fairly in this regard.

  • I have (finally) finished sorting the midterm Scantrons. If you want to take a look at yours, visit me in my office hours starting on the 23rd. To see yours, show me your T-card. The original Scantrons do not leave my office.

    The answers recorded for you are here. See the instructions below for decoding this. The major reason for seeing your original Scantron is that the answers recorded for you disagree with what you noted down (on the question paper), and you want to find out why.

  • Here are the solutions to the two midterm versions, with answers and comments: white and yellow.
  • The results recorded for everyone are up. I'll give you the link in a moment. By law, I am not allowed to post student numbers, so first you have to scramble your student number, which you do like this: take the last 5 digits, and add to this the 4 or 5 digits that remain. For example, 997654321 becomes 54321+9976=64297, and 1001234567 becomes 34567+10012=44579. Got your scrambled student number? Good. Next, in the table (to which I will post a link in a moment), find your scrambled student number at the beginning of a row (they are sorted). Along that row are your answers and the correct answers for each question. If you got the question right, you'll see your answer and a *, for example A*. If you didn't, you'll see your answer and the correct answer in brackets after it, for example B(D). That means you answered B but the correct answer is D. Understood? Good. Here's the link.

    A few students bubbled in multiple answers for the same question (indicated by MULT). This means that you automatically get the question wrong. It might be caused by failing to sufficiently erase the answer that you no longer wanted.

    It is possible for two (different) student numbers to scramble to the same thing. This happened 14 times here. (This is actually deliberate, because it means that there is no way of going backwards from a scrambled student number to an original one.) If this happens to you, one of the multiple rows in the table will be yours. They are all there. It should be easy enough to tell which one it is.

    If you notice a discrepancy between what is posted here and what you thought you answered, you can check your original Scantron to find out what is going on. This can be done during my (Ken's) office hours. I haven't finished sorting the original Scantrons yet, but I should be finished with that during reading week. The rules on that: (a) I need to see your student card to verify that the exam you are looking at is yours, and (b) the original Scantrons do not leave my office.

  • I forgot to post the summary statistics for the exam: median 27/40 (67.5%), third quartile 31/40 (77.5%), first quartile 22/40 (55%). This is pretty much in line with what we were expecting.
  • I think the midterm marks are all up on Blackboard. I found a student number for all the papers, but there are three student numbers with names of people not registered for the class. If your mark is missing but you wrote the exam, you need to e-mail me with your name and student number. I will try to find you, but it may take a while.

    Next, I want to put up a web page with (encoded) student numbers and answers recorded for all the questions. That will enable you to check what was recorded for you. After that, I need to sort the big pile of Scantrons so that you can look at yours. I'll let you know when that's done.

  • 2015-02-11 17:00: I have the midterm results. Currently uploaded to Blackboard are (a) the papers with correctly bubbled-in Scantrons and (b) the papers with incorrectly bubbled-in Scantrons but with enough of a bubbled-in name that I could identify them (there were about a dozen of these). Next I see whether there are any with unbubbled student ID who I can identify by name. (There are, it turns out, about a dozen of these too.) After that, I'll need to see if there are any papers with no identification bubbled, but with something written on the Scantron. Identifying these will require me to have the paper Scantrons sorted, which will take until next week. (I don't think there are any of these.)
  • 2015-02-10 13:00: The midterm exams are in the process of being marked (by machine). I am expecting the results back maybe this afternoon, maybe tomorrow. What I plan to do is this:
    • upload the marks to Blackboard. As long as you filled out the bubbles for your student number on your Scantron, the mark should upload properly. Potential problems:
      • If you bubbled your name but not your student number, I will have to look up your student number, enter it into my spreadsheet, and re-upload the marks. This will take time, but it will be done.
      • If you bubbled your student number wrong, I will be told this when I try to upload your mark to Blackboard. I then need to find the wrong student number in my spreadsheet, correct it and then upload again.
      • If you didn't bubble anything, but you did write something like your name or student number on the Scantron, you will have to wait until I get the original Scantrons back, which will be another couple of days. I then have to match the nameless line in my spreadsheet with the Scantron and fill in that identification in the spreadsheet, and upload again.
      • If you didn't bubble or write any identification on the Scantron, I may have one or two workarounds (that involve extra time on my part and probably yours), but you are at serious risk of scoring zero.
    • make a table of responses by student and question, so that you can check what was recorded for you.
    • when I have received and sorted the (nearly 900!) Scantrons, you can come and check yours, should you wish to. I keep the original Scantrons, but you can look at yours as long as you stay in my office while you are doing so.
  • 2015-02-10 10:00: Several of the TAs are sick this week. Watch out for announcements: if the tutorial has to be cancelled, either the TA or I will e-mail an announcement from Blackboard. If this happens to you, the missed quiz will be made up at the next tutorial (ie. that tutorial will have two quizzes), so you don't need to go find another tutorial to write the quiz in. (That said, if you want to attend another tutorial to make up for your cancelled one, and then leave before the quiz, that's fine.)

    If you as a student miss a quiz due to illness, you can either (a) write the quiz in another tutorial, for the one week only, or (b) get a note from your doctor certifying that you were unable to get to tutorial, and give it to your TA (or your instructor, or me, Ken). In that case, you will see the "-1" notation appear as your "grade": this means "missed with documentation".

  • 2015-02-10 10:00: I have to move my Thursday office hours again: 11:00-12:00 again this week.
  • 2015-02-02 15:00: I (Ken) have to move my Thursday office hours this week to the morning, 11:00-12:00 or whenever you can catch me.
  • 2015-02-02 13:45: TAs will be having extra office hours between now and the exam, in IC 404. Check here to see who will be there when. (This is "live", so will get filled in as TAs fill in their hours. Don't add to it yourself.)
  • 2015-02-02 08:50: tutorial 1, at 9:00, is cancelled because of the weather. If you're in that tutorial, please attend another one this week.
  • 2015-02-02 08:45: university is open. If you have a tutorial today that you won't be able to get to, you can write your quiz in another tutorial this week. The weather forecast predicts the snow to stop by noon.
  • 2015-01-28 12:00: Instructions on where to go to write the midterm. It's arranged by first letter of last name.
  • 2015-01-27 12:00: WebWork is an online collection of problems for this course. As we said in the course outline, if you correctly complete more than 60% of these problems, you will get 2 bonus points on your grade. The link is here.
  • 2015-01-26 11:00: There are some issues with Blackboard. As a result, some students who are in the course are not listed on Blackboard, and some students who are registered in the course are not appearing in their proper tutorial. This is being worked on: please be patient. I have instructed the TAs to keep their own records of people who are not (currently) on Blackboard, so that when everything is sorted out, those people's marks will appear.

    A reminder that the only thing on the "LEC030201" section on Blackboard is quiz grades. The midterm marks will also be available there, but there is nothing else to see there.

    You are currently looking at the central course website. Look here for overall course-related information. If you are in Olga's section 1, you will have access to the LEC01 section on Blackboard (this is unaffected by the Blackboard issues), and if you are in one of Srishta's sections, you can consult her webpage.

  • 2015-01-26 11:00: Our midterm is on Friday February 6 15:00-17:00 in the (old) Gym, AA 112 and AC 223. You will get instructions on which room you will need to go to.
  • 2015-01-21 21:30: I am not available for office hours on Thursday this week. I will be back on Monday.
  • 2015-01-21 21:30: the Thursday 10:00 tutorial (tutorial 21) is cancelled for tomorrow only. There will be two quizzes next week.
  • 2015-01-21 21:30: The following people have undeliverable e-mail addresses. Get this fixed if you want to receive e-mail sent from Blackboard: asra.k, eb_, maha.ejaz, naila.chandoo, zilu.huang, olareju.lisboa,, michael.leung, soroush.yousefi, saruka.k.
  • 2015-01-19 14:00: note that tutorial 29 has moved rooms: this is now Wednesday 14:00-15:00 in HW 308. (This is Dexter's tutorial.)
  • 2015-01-06 15:00: The way to learn this stuff is to do lots of problems. There are problems at the end of every chapter of the textbook, and the Student Solutions Manual has detailed solutions to all the odd-numbered ones. Look out for some recommended problems to tackle.
  • Welcome to the website for STAB22, Winter 2015!
  This Web Page is maintained by Ken Butler
Last modified:
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