If you are reading this, you have found your way to the summer
2012 STAB22 home page. Welcome!
|Ken Butler (and daughter)
Use the links to the
left to navigate, or to get in touch with us.
News is here
- Aug 28, 5:00pm: I have submitted the final grades, and you will
be receiving them via ROSI shortly. From here on, if you have any
problems with your grades, you will have to take that up with the
Registrar's office, who will explain your rights to you. I am
not allowed to discuss or negotiate grades, or offer special
consideration. If you ask me for special consideration, you are
only showing your bad manners, and I cannot guarantee the politeness
of any reply (insert emoticon here).
I wish everyone a pleasant remainder of the summer, and hope
you learned something from the course that will be helpful to you.
- Aug 21, 10:30am: I am sitting in IC 404, and as I write, there
are exactly two students here. (It got busier later.)
- Aug 18, 10:30am: I forgot to give you the room allocation for
the exam. It's by last name: A-R inclusive is in IC 130, and S-Z
inclusive in IC 220. If you're writing a deferred exam, you're in IC 130.
- Aug 17, 10:30am: I've scheduled myself for some office hours on
Tuesday morning. TAs are on duty all day today (Friday) in IC 404. (It might
get a bit busy in there today, since there is a calculus exam on
- Aug 14, 11:00am: I'm relocating to my office.
- Aug 14, 10:00am: I am in IC 404, or, depending how busy it gets,
in my office IC 471, right now until 1:00pm. If you can't open the
door to IC 404, use the "wheelchair" button. I have also scheduled
myself for Thursday 3-5, and will be available sometime Monday
and/or Tuesday next week as my schedule permits.
- Aug 9, 1:00pm: link
to the TA pre-exam
office hours, including mine on Tuesday morning. This link is
"live" and will be added to as the TAs pick their hours.
- Aug 8, 12:30pm: TAs will be having pre-exam office hours in IC
404 (this is a correction) starting on Friday August 10. As of right
now, Jon Balon will be there on Friday from 12:00 noon to 3:00pm.
- Aug 6, 9:30am: I'm planning to be in my office on Wednesday
August 8, 11:00am to 3:00pm, should you have questions. I intend to
be around various times between now and the final exam, and the TAs
will also be having office hours, which I will publicize here.
- Aug 3, 11:30am: Sections you do not need to worry about for the
That's it. The only optional sections I included are ones relating to
the sign test. If you're not sure about anything else, ask.
- Segmented bar charts (chapter 3)
- Correlation tables (chapter
- Plan B: Attack of the Logarithms (chapter 10)
- Tree diagrams (chapter 15). I drew tables instead.
- Bayes' rule (chapter 15) ditto. Use a table.
- Correlation and covariance (chapter 16)
- The Poisson model (chapter 17)
- Finite population correction (chapter 18)
- Plus Four confidence interval (chapter 19)
- Large Sample Confidence Intervals based on normally distributed
estimators (chapter 19)
- The pooled t-test (chapter 23) and all the sections from Back
into the Pool and Is there ever a time when assuming equal variances
makes sense (inclusive). Read Determining the Sample Size, though.
- Aug 3, 11:00am: final exams from fall 2010 and fall 2011 are up
on the old exams page.
- Aug 2, 6:00pm: here are my notes
from today. I'm hoping to get the 2010 and 2011 fall exams up soon.
- Aug 1, 9:20pm: we've finished the course material (up to the end
of Chapter 25). Thursday's class is a review / question-and-answer
session. Bring your questions! (It's not being taped, so your chance
to benefit from it is to be there.)
- Jul 31, 6:00pm: MyStatLab exercises for Chapter 25 are
up. Coming up later: a list of which sections you don't need for our final.
- Jul 31, 5:00pm: chapter end exercises for Chapter 25: 1, 5, 7,
11, 15 (use software to find appropriate means and SDs), 23,
25. (On an exam I would give you means and SDs of the differences; I
won't make you compute them.) Also, compare the exercises from
Chapter 24, and make sure you understand why those exercises need to
be treated as two independent samples, and the ones in Chapter 25 as
matched pairs. Some of the Part VI review exercises starting on page
750 are useful: 1, 3, 5, 23, 33, for example. (Many of those test
material from chapter 26, which we do not cover.)
- Jul 31, 3:00pm: the TA Andi Kerenxhi will have extra office
hours today in IC403 starting at 5:00pm.
- Jul 26, 6:30pm: MyStatLab exercises from Chapter 24 are up. From
the text: 1, 5, 7, 9, 11, 21, 23, 27, 31, 37. You can also practice
the sign test by doing any of the hypothesis tests from Chapter 23
as tests on the median, and using the binomial table or normal
approximation to obtain a P-value.
- Jul 26, 5:30pm: lecture notes after today's class are
up. Exercises to follow shortly (after I eat dinner!)
- Jul 25, 10:00am: homework on MyStatLab from Chapter 23 is
up. Chapter 23 questions: 1 (don't do (c)), 5, 7, 11, 13, 15, 19,
21, any odd-numbered exercise from 29-37 (do any tests as two-sided
and follow up with a confidence interval if necessary). 37(e) is a
sign test, which you'll be able to do after Thursday's class.
- Jul 24, 6:00pm: forgot to mention that Quiz 10 contains
questions on confidence intervals and hypothesis tests for a single
proportion. The stuff, in other words, from chapters 19 through 21.
- Jul 24, 4:30pm: today's lecture notes up. MyStatLab and chapter
end exercises to follow tomorrow morning.
- Jul 20, 10:00am: lecture notes and a rather horrific MyStatLab
homework are now up. Some chapter-end exercises: chapter 20: 29, 31
(convert the experts' opinion to a proportion). Chapter 21: 1, 5, 7,
13, 15, 19, 29, 31 (use binomial table), 35. Chapter 22: 5 (are the
two groups really independent?), 9, 13, 21 (do a two-sided test and
follow up with a confidence interval if necessary), 25, 31.
- Jul 19, 8:30pm: chapter-end exercises, MyStatLab exercises,
lecture notes and quiz notes for next week are going up tomorrow morning.
- Jul 18, 11:00am: Chapter-end exercises: chapter 19: 19, 23, 25,
29, 31, 37, 39, 41(a), 47 (use the information in 46). Chapter 20:
1, 3, 5 (careful!), 7, 9, 11*, 13, 17*, 21*, 23*. In the questions
marked with a *, calculate the P-value based on a *two*-sided
alternative, even if your H_A isn't, and if the P-value is small
(here less than 0.10), follow
up with a 90% confidence interval to show which side of the null the
true p is, according to the data. My P-values are respectively
0.4642, 0.1147, 0.0556, 0.2152, with a confidence interval for the
twins one of 0.008 to 0.027, so that the rate of twin births is
*lower* for the young mothers.
- Jul 18, 11:00am: MyStatLab homework from chapters 19 and 20 is
up. (I had to add some hints to the Chapter 20 exercises because we
do P-value calculations based on two-sided alternative
hypotheses. But if you are purely asked for the hypotheses, I expect
you to be able to produce a one-sided alternative if needed.)
- Jul 17, 5:00pm: today's lecture notes are up; problems will be
going up tomorrow morning, all being well.
- Jul 14, 10:00pm: I made a mistake on page 212 of the notes. When
n=10 and p=0.15, the probabilility of exactly 2 successes is 0.2759
not 0.1937, which is the entry for the next column over. The notes
have been corrected accordingly and uploaded. (Thanks to the
sharp-eyed student who spotted this!)
- Jul 12, 5:30pm: next week's quiz, #9, will have one question
about the binomial distribution (including possibly the sampling
distribution of the sample proportion), and one about the sampling
distribution of the sample mean.
There is one more quiz, #10, which will undoubtedly include
something about confidence intervals and hypothesis testing (which
we start in on next week). There is no quiz (for
credit) in the last week, but I will circulate a "quiz 11" to the
TAs for everyone to work on, so that you get some practice on the
material from the tail end of the course.
- Jul 12, 5:00pm: MyStatLab "homework" is up. Some questions from
the text: chapter 18 1, 3, 9, 11, 15, 17, 25, 29, 33, 37, 39, 47,
49. Chapter 19 3, 7, 13, 15, 17.
- Jul 12, 4:30pm: today's lecture notes are up.
- Jul 11, 3:00pm: ... or afternoon. Chapter end exercises from
Chapter 17 are 23, 27, 29, 33, 35, 41, 45, 47. These and more are
also up on MyStatLab.
- Jul 10, 5:00pm: lecture notes with today's scribblings are
up. MyStatLab problems and chapter end exercises are going up later
tonight or tomorrow morning.
- Jul 6, 10:30pm: Remember that Betty-and-Clara-go-swimming
problem from the lecture? I showed you how to get the answer
exactly, using the trick of looking at the difference between their
times. But you can also do it by simulation in
StatCrunch, like this.
- Jul 6, 2:30pm: I've spent waaaay too much of today writing the
StatCrunch report about the other class
it is. Have a read. (If you log in you can have a play with my data.)
- Jul 5, 5:30pm: I'm planning to a StatCrunch report about the
simulation I never got to do in class today. Look out for it
tomorrow, maybe tonight if I have any juice left.
- Jul 5, 5:30pm: some problems are up on MyStatLab covering the
end of Chapter 16 and the beginning of Chapter 17.
from the text are: chapter 16: 27, 29, 31, 37, 39, 43, 45, 47,
chapter 17: 1, 9, 11, 15, 19, 21. I think there are no
calculations using the binomial model, only the geometric. A
reminder that "expected value" is the same thing as the mean of a
- Jul 5, 5:00pm: quiz 8 will cover conditional probability and
independence, and the mean and SD of random variables.
- Jul 4, 1:30pm: some exercises from the end of Chapter 16 for you
to try, based on yesterday's class: 1, 5, 7, 9, 11, 15, 23,
25. These problems, and others, are also on MyStatLab.
- Jul 3, 5:00pm: updated notes are up. Problems to work on are
most likely going up tomorrow morning.
- Jul 3, 12:30pm: to begin today's class, I want to do some more
examples of the probability stuff, before moving on to Chapter 16.
- Jul 3, 12:30pm: if you are in tutorial 5 (Nizanthan's) on
Thursday, be warned that you will have a different TA this week!
- Jun 25, 10:30am: the final exam date is, um,
final: Tuesday August 21, 7:00-10:00pm, in IC 130 and IC 220.
- Jun 21, 5:00pm, amended Jun 25, 10:30am: I've posted a rather
horrific set of problems on MyStatLab from Chapters 14 and 15. I'm
thinking that after we come back from the break, I might do some of
them in the lecture. This kind of stuff benefits from (lots of)
practice, and there are some tricks that often turn out to be
useful. For example, there's a much simpler way of seeing
the dish-breaking problem, the one that we finished with last week.
- Jun 21, 4:30pm: I'll sort out the quizzes later, since we have
time, but expect to see something from Chapter 14 and maybe 15. (We
have technically finished Chapter 15 now, but I'd like to go over
that last example again.) Chapter 14 exercises: 11, 13, 15, 17, 19
("A but not B" is the same as "both A and not-B"), 23, 25 (think
about the ways you can get a total of 2 or 3 or 12. It might help to
label the dice as "red" and "green".) For some of these exercises
(like 17 and 19), you might find it helpful to pretend that there
are 100 households (homes, whatever) and make a table like the one
in #23 or our law-school examples. Chapter 15: 1, 3 (assume
independence), 5, 7 ("at least one" is the same as "not none"), 13,
17 (a deck of cards has 52 cards; 26 of these cards are red, 13 each
of hearts and diamonds, and the other 26 are black, 13 each of
spades and clubs). Each of the 13 cards in a suit has a "rank", Ace,
2 through 10, Jack, Queen and King.), 25, 29, 33, 37 (tricky), 39, 47
(like the one we did in class). Actually, any of the exercises here are good.
- Jun 21, 2:00pm: next week (precisely, June 26 to July 2)
is reading week. There are no lectures, tutorials or
quizzes next week.
- Jun 19, 4:30pm: more Chapter 13 exercises: 7-25 (the odd ones),
27, 29, 33, 37, 39, 45, 49. Chapter 14: 1, 3, 7, 9. The lecture
notes from today are also up.
- Jun 15, 12:00noon: A MyStatLab homework from chapters 12 and 13
is up. If you prefer to tackle exercises directly from the text:
chapter 12: 23, 27, 31, 33, 35; chapter 13: 1, 3, 5. I haven't
talked about blinding, placebo/control group and confounding yet, so
if you should happen to run into those on MyStatLab, don't worry
about them yet.
- Jun 14, 10:30pm: Annotated answers to
version 1 of the midterm are up. The other versions of the exam have
the same questions and alternative answers, but in a different order.
- Jun 14, 6:00pm: The next quiz (#6) will be on sample surveys and
sampling, and on experimental design and observational studies: that
is, chapters 12 and 13. I haven't quite finished Chapter 13 yet, but
only the stuff we've done in class will be on the quiz.
- Jun 14, 5:30pm: latest lecture notes are up; exercises and
MyStatLab stuff will be up later/tomorrow, as the mood takes me.
- Jun 13, 9:30pm: here are the midterm
marks, out of 40. Before you go looking for yours, be sure to
scramble your student number according to the instructions at the
top of the exam results page. Check your calculations at least twice
before you complain that you are not there. The median score, as I
write, was 27/40 or 67.5%; Q1 is 23 (57.5%) and Q3 is 31
(77.5%). There were 5 people who scored 36 (90%) or more; special
congrats to you.
I am working on "annotated answers" to the exam (answers plus
explanation), which I will post when it is ready. (That will be
tomorrow or Friday.)
- Jun 12, 6:30pm: Some problems from the end of Chapter 12: 1, 3,
7, 9, 11, 13, 15, 17, 21. I'll put a homework up on MyStatLab
- Jun 12, 6:30pm: The exams are in the hands of Test Scoring, so
we should have some results in the next couple of days.
- Jun 7, 4:30pm: today's lecture notes, including the tidied-up
histogram, are up. Quiz 5 will cover Chapters 9 and 10 (yes, there
is a quiz next week). Some questions from Chapter 11: 1, 5, 7, 9,
11, 17, 19, 25, 33, 35. There is also a StatCrunch homework up.
- Jun 6, 4:00pm: I forgot to mention that Quiz 4 covers
scatterplots, correlation and regression, chapters 7 and 8 (but not
9 or 10 yet).
- Jun 6, 1:00pm: the midterm exam covers chapters 1 through 11
from the text. You're responsible for any material in the text that
appears in those chapters, with the exception of timeplots (chapter
5) and "Plan B: Attack of
the Logarithms" in Chapter 10 (which I forgot to include). Also, I
won't ask you to calculate a correlation by hand. We didn't do
"Re-expressing Data: a first look" in Chapter 5, but we covered
those ideas in Chapter 10.
- Jun 6, 1:00pm: a Jun 5 homework is up on MyStatLab with some
questions from Chapters 9 and 10.
- Jun 5, 4:30pm: some chapter 9 problems: 1, 7, 11, 19, 25, 37;
and from chapter 10: 5, 11, 13, 17, 25, 31, 37. A MyStatlab homework
will go up tomorrow.
- Jun 5, 1:00pm: here are the TAs' pre-midterm office hours, to
be held in IC 404. Feel free to see any TA; you don't have to see "yours".
Wed Jun 6 10:30-12:00 Danny
Thur Jun 7 10:00-11:00 Thomas
Fri Jun 8 10:00-12:00 Thomas
Mon Jun 11 10:00-13:00 Nizanthan
I am also planning to be around on Monday, probably in the afternoon.
- Jun 4, 1:00pm: The midterm exam will cover whatever we get up to
on Thursday, which I'm intending to be somewhere in Chapter 11.
exam has 40 multiple choice questions. A reminder that you are
allowed one 8.5x11 inch sheet of notes, both sides, handwritten by
you, and a calculator. The calculator may not be programmable and
may not communicate with the outside world, so no cell phone
calculators, even in airplane mode. Bring a #2 pencil for the
Scantron sheet. A black pen will probably work, but is not
- May 31, 5:30pm: I made a rather large homework on MyStatLab,
having realized that I failed to put one up on Tuesday.
- May 31, 5:00pm: some more chapter 8 questions: 27, 29, 35 (use
StatCrunch, typing the data into an empty worksheet), 37 (do this
one at the same time as 35),
41, 47, 51. You can also tackle Chapter 9 numbers 1, 3, 5.
- May 31, 5:00pm: the lecture notes, incorporating today's
additions, are now up.
- May 31, 2:30pm: there is a (new) version of StatCrunch for
phones, here. Log in with
the same ID and password that you regularly use.
- May 29, 4:30pm: Some end-of-chapter exercises from Chapter 7: 5,
9, 11, 13, 17, 21, 25. From Chapter 8: 1, 5, 13 (read 7 first), 19,
27. I've put some problems on MyStatLab also. (Check the chapter 8
problems -- there might be some stuff we haven't done yet.)
- May 29, 11:00am: Here's who is where for the midterm. It's
according to last name:
Last name Room
A-I SW 128
J-Patel SW 309
Phan-Z SW 319
These rooms are on the south campus.
Reminder that the exam is Monday June 11, 5:00-7:00pm.
- May 28, 8:00pm: Lecture notes updated (again), including
specifically some more material from Chapter 8, which we'll be
- May 28, 11:30am: The midterm date
is official. Specifically, Monday June 11, from 5:00-7:00
pm, in S128, S309 and S319. I will publicize (here) which room you
need to go to as soon as it is worked out.
- May 24, 6:00pm: there are some exercises from today's lecture on
MyStatLab. Some exercises to try from the end of Chapter 6 are: 19,
23, and Chapter 7: 5, 7, 13, 15, 19, 21, 23, 35.
- May 24, 5:30pm: Quiz 3 will be on: using the normal tables
(forwards and backwards), the 68-95-99.7 rule, and normal
probability plots. Take note of two things: in the old textbook,
Table A was the normal table, so any lingering references in the
quiz to Table A refer to your Table Z. Also, normal probability
plots on the quizzes were produced with different software, and the
variables ended up on the opposite axes. Take note of this if you're
figuring out eg. direction of skewness.
- May 24, 5:00pm: the updated notes (including the stuff I did on
the document camera on bright yellow paper) are now up.
- May 23, 4:00pm: I have now updated the notes to include some
stuff I missed on Tuesday. Pages 64-66 are the ones to read before
Thursday's class. Then we'll move on to Chapter 7.
- May 23, 10:15am: I put a "homework" from Tuesday's class on
MyStatLab. I also realized that I hadn't made the student solutions
manual available to you guys, but it should be there now (see my
10:30 note from yesterday).
Some questions from the end of Chapter 6: 1, 3, 5, 17, 21, 25
(|z|<0.5 means -0.5May 23, 10:00am: I've updated the lecture notes (see left). If
you read ahead, you'll see that there's a gap corresponding to page
133 of the text, which I will fill in today.
- May 22, 10:30am, amended 12:00noon: I had a request for some recommended
chapter-end exercises. Here's what I have for chapter 5: 3, 5 (not
(e), 9, 13, 15, 19(c) (which answers (b)), 27, 29, 33, 37. These all
have answers at the back of the text (in Appendix A) and there are
fully written-out solutions in MyStatLab. (Click on Chapter
Contents, and the first item should be Student Solutions Manual.)
- May 18, 11:30am: there is a new "homework" on MyStatLab,
reflecting what we did in class yesterday. In one or two places,
you're asked to calculate the "range", which is the difference
between the highest and lowest values. The problem with the range,
and the reason I didn't spend any time on it, is that it
is very sensitive to unusually high or low values, even
more so than the standard deviation.
- May 17, 5:30pm: we have a tentative date for the midterm, which
is Monday June 11. This date may change.
- May 17, 5:30pm: quiz 2 will be on mean, median, IQR and SD and
boxplots. You won't have to calculate a standard deviation.
- May 17, 5:00pm: updated lecture notes uploaded.
- May 16, 14:30pm: I added some links on the left: to the
lecture-casting website, and to my document about MyStatLab and StatCrunch.
- May 15, 6:00pm: the notes with annotations from today's class
are up. I also uploaded an Open Office version of the notes, in
case that's what you use.
- May 15, 10:00am: Just in case things are confusing: Quiz 1 will be
on types of variables, bar charts and pie charts, and the piece of
Chapter 4 we covered last week (up to inter-quartile range).
- May 13, 10:00pm: I realized that I missed out some of Chapter
3. I inserted some pages in the notes, which I will talk about on
Tuesday. This stuff might be on quiz #2, but will not be on quiz
#1. The relevant piece of the textbook starts on page 24. If you
want to read ahead, that and the rest of Chapter 4 would be good to
- May 10, 8:00pm: I've made some "homework" on MyStatLab for you
to try. "number one" is to get you used to the system, "number two" is
stuff from Chapter 2, and "May 10" is stuff from today's class. You
might need to read the textbook some to help you with the questions
from Chapter 3. (I can't cover everything in class, y'know.)
- May 10, 5:00pm: lecture notes, including today's scribbles, are
now uploaded. We are now in the middle of chapter 4 of the
text. Where we got to today is the cutoff for Quiz 1, next week (it
doesn't matter if your tutorial is Monday or Friday; nothing from
next Tuesday's class will be on this quiz).
You may have noticed a cameraperson taping our lectures. This
will continue throughout the semester. You can (re-)watch the
lectures by going to the
WebOption website and logging in the same way you'd log into
The quiz format is this: two questions, worth 5 points each
for a total of 10, requiring short answers. I devise all the
quizzes myself and give the TAs my solutions. (Each tutorial gets
a different quiz.)
The quizzes are not
meant to be difficult if you have kept up with the material.
- May 8, 1:30pm: you will probably want to access MyStatLab and
StatCrunch. Click here to find out how.
- May 8, 11:30am: lecture notes up to Chapter 12 now done. I have
also added a .pdf version (see left column).
- May 6, 1:30pm: lecture notes up to Chapter 11 (as per textbook)
- May 2, 10:00am: my lecture notes are not quite complete yet, so
expect gradual updates to what appears in the left-hand column as we
go on. As of right now, up to about page 70 is good. We'll probably
add things to the notes in class, so this document is likely
to change as we go (even after I have "finished" it). I'll mark the
last change date, so that you'll know how up-to-date your version is.
- Apr 13, 10:45am: we have a new textbook.
- Apr 13, 10:30am: Read this if you are having trouble getting into a tutorial.
- Jan 6, 3:30pm: There was a mixup in getting the grades back
from the test scoring people, but all is good now. I submitted the
grades yesterday, after which they had to be approved by the
department, and then go through the machinery at the Registrar's
office to find their way onto ROSI. So the grades are on their way.
A reminder that we are not allowed to discuss or
negotiate grades. If you have any issues with the grade
you have received, you need to take that up with the Registrar's
office, not with us. You have rights which the Registrar's office
can tell you about.
There were three people who wrote their final exams at a
different time because of conflicts. As I write, I do not know the
marks of those exams. If you are one of those students, please
ignore what appears on ROSI for the moment; I will make
corrections once I have the marks.
- Dec 15, 11:00am: Ken will be available in his office this
afternoon (Thursday) from about 3:00, and can stay until about 5
(but may leave sooner if there is no-one there).
- Dec 9, 2:00pm edited Dec 10 11:00am: Here are the TA office
hours before the final:
Srishta Chopra Friday, Dec 9, 11:00-13:30,
Monday, Dec 12, 13:00-14.30,
Wednesday, Dec 14, 14:00-15:30
Kry Lui Thursday (Dec 8th), 10:00 - 18:00
Wednesday (Dec 14th), 12:00 - 16:30
Jon Balon Wednesday the Dec 07, 15:00-17:00
Andi Kerenxhi, Tuesday Dec 13, 14:00-18:00
Hoi Suen Wong Tuesday (Dec 13) 10:00 - 14:00
Wednesday (Dec 14) 10:00 - 12:00
Christopher Chow Wednesday dec 7 12:00-15:00 and Monday Dec 12 11:00-13:00
Kevin Yan Dec 14, 17:30-19:00, 10:00-12:00 ,Dec 15, 13:00-14:30
Zengxin Hong Dec. 9, Friday 13:30-17:00
Dec. 12, Monday 14:30-17:00
Dec. 15, Thursday 9:00-13:00, 14:30-17:00
- Nov 29, 11:30am: Ken's lecture notes from today are
up: part 1 and part 2.
- Nov 29, 9:30am: Stuff you don't need for the final exam:
- Section 3.4, Ethics
- Section 4.5, advanced probability rules
- Section 6.4, Power of tests of significance
- Section 7.3, More tests for distributions
- Chapter 8 (inference for proportions) and beyond
- Nov 25, 1:00pm: The final examination is on Fri Dec 16th at
9:00am in the Gym. It is a 3-hour examination covering the whole
course. Information and regulations for the final exam are elsewhere
on this website.
- Nov 25, 12:30pm: Ken's lecture notes from
today, and the extra reading that we
didn't get to in class today. Tuesday's class, the last lecture,
will be a kind of highlight reel of the t procedures in Sections 7.1
and 7.2. We're not doing: power of tests of significance (6.4),
section 7.3, or any of chapter 8.
- Nov 18, 12:00pm: Don't forget to complete your evaluation of
this course, on the Intranet. This is your chance to have your say
about what you liked or didn't like about the course, and how you
think it could be improved.
- Nov 16, 5:00pm: I forgot to mention that quiz 10, the last one,
will cover random variables (sections 4.3 and 4.4) and the sampling
distribution of the sample mean (section 5.1).
- Nov 15, 1:00pm: the StatCrunch report illustrating Question 2
from lecture 17 is here.
- Nov 15, 9:30am: the StatCrunch report illustrating Question 1
from Lecture 17
- Nov 11, 12:30 pm: the notes from Ken's class today
are here. Part of it refers to a StatCrunch
report which is here.
- Nov 9, 1:00pm: Quiz #9 will cover probability up to the
addition and multiplication rules (and, therefore, independent and
disjoint events also). If you're in Srishta's tutorial that got
disrupted, you'll be a week behind on quizzes the rest of the
way. There are 10 quizzes altogether; your worst quiz mark gets
dropped. (As of this moment, there are six lectures to go.)
- Nov 3, 7:30pm: As promised, the version of the exam
with explanations as well as answers. (This
is actually the White version, but the other versions had all the
same questions, but rearranged a bit.)
- Nov 2, 12:30 pm: Here are the versions of the exam, with
answers: white, pink, green
- Nov 2, 11:00 am: Midterm marks are up. The exam is
out of 37. Median mark was 25 (67.5%), Q1 was 20 (54%), Q3 was 29
This exam was a little more difficult than usual, so we have
decided to give everyone a bonus of 2 points (out of 37). The link
shows the actual numbers of questions correct (you can count them),
so the 2-point bonus will be added on to what you see there.
example, if you scored 27 out of 37, the midterm contribution to
your overall grade will be 29/37=78%. As a rough guide to letter
grades: above Q3 is A, between median and Q3 is B, between Q1 and
median is C, below Q1 is D or F. That is to say, if you perform
about the same relative to the rest of the class on the final exam,
that is the kind of grade to expect. But you still have to produce
If you see any problem with your Scantron being improperly
read, let me know (e-mail) with your name and student number, but
I won't be able to do anything about it until I see the original
Scantrons (Friday or later).
Coming later (up now) are
"annotated answers" (with my comments) to one of the versions.
- Nov 2, 11:00 am: Quiz #8 will cover the rest of Chapter 3:
that is, sampling (3.2) and "toward statistical inference" (3.3).
- Oct 25, 12:00pm: yes, there is a quiz #7. It will cover: the
question of causation (section 2.6), intro to collecting data (the
start of chapter 3) and experimental designs (section 3.1). There is
nothing from Section 3.2 on quiz #7, but there *is* stuff from there
on the midterm exam, so make you read that section of the textbook
before the exam.
- Oct 25, 11:00am: Apologies from Ken to those in the back who
couldn't hear me very well today.
- Oct 25, 8:30am: Here's which room to go to for the
|Last name begins with||Go to room|
- Oct 24, 12:30pm: the pre-exam help schedule is updated, as shown
in the table in October 20th's second entry.
- Oct 24, 12:30pm: FSG update: Reza has put handout 5 and handout 6 online. (You may, or may not, need to log in to the
Portal to see them.)
- Oct 21, 8:30 am: FSG update - the time and location have changed,
Day Time Place
Monday 15:00-16:00 Portable 04, room 101
Friday 11:00-12:00 Portable 04, room 101
- Oct 20, 10:30 am: the midterm covers everything up to the end of
section 3.2 in the text (sample surveys). We're aiming to have the
lecture on Oct 28 be a question-and-answer session, so think about
what questions you'd like to ask.
- Oct 20, 12:00pm updated 6:30pm, updated again Mon Oct 24 12:30: Extra help before the midterm is as
below, in IC 404 unless stated:
|Time||Fri Oct 21||Mon Oct 24||Tue Oct 25||Wed Oct
26||Thu Oct 27||Fri Oct 28|
|9:00-10:00|| ||Zengxin||Srishta|| ||Srishta,
|10:00-11:00||Srishta||Zengxin||Hoi Suen|| ||Jon
|11:00-11:30||Srishta|| ||Christopher|| ||
|11:30-12:00|| || ||Christopher (IC 404), Ken (IC471)||
|| || |
|12:00-1:00||Christopher|| ||Hoi Suen (IC404), Ken (IC471)||
||Jon, Christopher|| |
|1:00-2:00||Jon, Christopher|| ||Ken (IC471)||Kevin||
|2:00-3:00||Jon|| || ||Kevin||
|3:00-4:30|| || || || ||Kevin
|4:30-5:00|| ||Andi|| ||
|5:00-6:00|| ||Jon, Andi|| ||
|| || |
|| || |
|6:30-8:00|| ||Hoi Suen||Andi||
|| || |
- Oct 18, 1:30pm: quiz #6 will cover R-squared, residuals and
contingency tables (ie. sections 2.4 and 2.5 of the text). Yes, I'm
aware that some people haven't written quiz #5 yet! Just so that you
know when you come to it.
- Oct 14, 9:30am: Reminder: the midterm is Friday October 28,
3:00-5:00pm, in AC 223, AA 112 and H 214.
- Oct 12, 9:30am: Tutorial 15 has moved from MW 223 to
PO 101, effective immediately. (PO 101 is one of the portables
on the former games field next to the Science wing.)
- Oct 12, 9:00am: I just added a section to
the FAQ about exams. See item #6.
- Oct 12, 8:30am: quiz #5 will cover scatterplots, correlation and
regression basics (ie. sections 2.1, 2.2 and 2.3 of the text). Those
folks with a Monday tutorial will do quiz #4 next week.
- Oct 7, 11:30am: in case it's not clear, there are no tutorials on
Monday. Those of you in Monday tutorials will be a quiz behind
everyone else the rest of the way. The last quiz will be on Mon Nov
28, and there is an extra tutorial (to make up for the one missed) on
Thu Dec 1. This is for tutorials 1, 3, 4 and 16 only. The rest of you
will proceed as usual, with the last quiz in the week of Nov 17-Nov 23
and one more tutorial after that. The yellow and green stripey
schedule at the bottom (waaay down) explains everything.
- Oct 4, 2:30pm: Quiz #4 will feature the normal distribution: the
68-95-99.7 rule, using Table A to get proportions from values and
values from proportions, and the normal quantile plot. (Note: the
normal quantile plots on the quizzes come from different software. The
principal effect of this is that sometimes the data and the "normal
quantiles" are on the opposite axes to what we are used to.)
- Oct 4, 2:30pm: thanks to a student who helped me figure out that
there was something up with the textbook data sets link for the 6th
edition. This is now fixed.
- Sep 30, 12:00pm: The midterm date is apparently confirmed: it is
Friday October 28, 3:00-5:00pm. (The actual exam will be 1 hour 45
minutes long to ensure the rooms are ready for the exams after us.)
The exam is in AA112, AC223 and H214. We'll tell you later which room
you need to go to.
- Sep 28, 1:00pm: I've uploaded the data disks from the text (6th
and 7th editions), in case you are having trouble accessing it. To
get a particular data set, navigate to it (using the link to the
left), then Open StatCrunch, select Load from Web Address, and copy
and paste the URL of your data set into the box.
- Sep 28, 12:30pm: The midterm date is not confirmed yet; I will
put a note here once it is official (and announce it in
class). Expect it to be near the end of October.
- Sep 28, 11:00am: Quiz #3 will cover: boxplots, assessing outliers
using the rule based on the IQR, changing the unit of measurement
(linear transformations) (at the end of section 1.2), using Table A
to obtain proportions from z-values.
- Sep 23, 1:30pm: The extra notes from Ken's lecture are here.
- Sep 22, 3:30pm: The Facilitated Study Groups will be conducted by
Reza Nabavizadeh. They will meet twice a week, as below:
|Friday||11:00-12:00||Portable 04, room 101|
- Sep 20, 6:30pm: Quiz 2 covers stemplots, histograms, centre,
spread and shape (especially shape), mean and median, when you might
use which, and how you might figure out the median from a histogram
or stemplot. (Mahinda's section hasn't done boxplots yet, so they
will probably appear on the next quiz.) This is lecture 3 and 4,
- Sep 20, 8:30am: I learned how to
report in StatCrunch. For Ken's students, it's a rehash of part of
- Sep 18, 3:00pm: your quiz marks will appear on the Intranet. (If
you already wrote your quiz, your mark might be there already.)
- Sep 18, 3:00pm: somebody left a notebook in Srishta's
tutorial. If it is yours, see Srishta or drop me (Ken) an e-mail.
- Sep 17, 9:30pm: You should find in your e-mailbox a message about
Facilitated Study Groups. These are collaborative weekly structured
study groups for our course. They are entirely optional. The first
stage is to find good times for everyone who wishes to
participate. For that, you'll need to access the course Blackboard
page and complete the survey there. (There is nothing else on the
course Blackboard page, since I'm not using Blackboard.)
- Sep 14, 12:00pm: I have edited the textbook
page to express my opinions on using the 6th edition vs. the
7th of the textbook. In summary: if the 6th edition is what you
have, that'll be OK.
- Sep 13, 12:00pm: Quiz #1 is coming up. The quizzes will consist
of two short-answer questions worth 5 points each, and will
be marked by your TA. Quiz #1 will cover types of variable
(categorical, quantitative), bar charts and pie charts. This is
true whether your quiz is on Thursday this week or Wednesday of next
week. The folks late in the tutorial week will get extra time to
study, or (depending on your point of view) more time to forget what
- Sep 9, 12:00pm: A Powerpoint giving an intro to StatCrunch is
over on the left, below the links to my lecture notes.
- Sep 9, 11:30am: Ken's lecture notes have a "to read for next
time" slide on the end of each lecture, which I forgot to get to
today. Thus, if you're in Ken's section, take a look at slide #19,
and look through the appropriate bits of the textbook
before Tuesday. That way, we can get down to business next time.
- Sep 6, 1:00pm: I know it's very confusing having a semester start
on a Thursday, so I thought I would make a table (below) showing
what is happening on which day. There is an additional complication
that Mon Oct 10 is Thanksgiving Day, on which there are no classes,
and the last Thursday of the semester is a "makeup Monday" for
people who would have had a tutorial on Oct 10.
Calendar for STAB22, Fall 2011
end of classes
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