Welcome
to the STAtistics Zone
(Statistics,
Period D)
Are
you nervous when you see NCWEE? concerned when you see CIRC? perturbed when you
see PBC? Visit Mr. Hansen’s fabled abbreviations
page to make sense of those cryptic markings you see on your papers.
Schedule
at a Glance (see archives for older entries) 


Th
1/23/14 
Classes resume. 

F 1/24/14 
No additional HW due. 

M 1/27/14 
Mozart’s birthday: No
additional HW due. 

T 1/28/14 
No additional HW. 

W 1/29/14 
HW due: Practice the Excelcise (see
10/28/010 calendar entry). 

Th
1/30/14 
HW due: Perfect your basic Excelcise skills, including use of the F5 (goto) key. 

F 1/31/14 
HW due: Practice, practice,
practice. 

M 2/3/14 
Room MH102 will be
available for the entire period for anyone who wishes to take the Excelcise. No additional new material will be covered
today. 

T 2/4/14 
HW due: 

W 2/5/14 
HW due: Write pp. 505506
#9.30abcdefg, 9.31abcdef, 9.33, 9.34abc, 9.38abcd. 

Th
2/6/14 
HW due: Write pp. 507
#9.40, 9.42, 9.43. 

F 2/7/14 
HW due: Read pp. 525529;
write p. 508 #9.46, 9.47. 

M 2/10/14 
HW due: Read pp. 531534;
write pp. 534535 #10.12, 10.13. 

T 2/11/14 
HW due: Write pp. 536537
#10.18, 10.22abc. 

W 2/12/14 
HW due: Get caught up on
earlier assignments from this semester, any or all of which may be rescanned.
No excuses! The general level of presentation—especially of problems already
discussed and corrected—needs to be higher than what was seen yesterday from
most of the randomly audited papers. 

Th
2/13/14 
HW due: Review problems as
listed below. If school is canceled, these will be collected Tuesday, 2/18,
before you take your test. If 3 or more students send email to Mr. Hansen by
midnight Sunday containing reasonably complete solutions to the problems, Mr.
Hansen will post a solution key on Monday that everyone can use to help with
studying for the test. A scanned image file (PDF, BMP, TIF, or JPG) of your handwritten homework is required. If
you don’t have a scanner, you can use a smartphone
to take a photo of your paper. “Texty” computer
notation—sqrt(x) for the square root function,
names such as and written as “xbar” and “sigma,” exponentiation shown with a caret
sign, and so forth—will not be accepted, since those notational crutches are
not allowed on tests or on the AP exam. 

F 2/14/14 
No school (teacher
professional day). 

M 2/17/14 
No school (holiday). Since
3 students did indeed send solutions (at least a reasonable effort) before
midnight last night, a solution key is available for your studying pleasure: page 1 page 2 page 3. 

T 2/18/14 
Test (100 pts.) on all recent material. 

W 2/19/14 
HW due: Correct yesterday’s test completely. Do all problems,
even those that you are certain you answered correctly on the test. (Note
that the wording has changed slightly in a couple of places.) Conferring with
classmates is fine, but no copying is allowed. Correct answers are expected. 

Th
2/20/14 
HW due: Read pp. 537548.
Reading notes are required, as always. 

F 2/21/14 
Makeup Test at 7:00 a.m. in MH102. This is the only time that the makeup test will be
offered, unless you contact Mr. Hansen with at least 12 hours’ advance notice
(email preferred). 

M 2/24/14 
HW due: Read the PHA(S)TPC procedures and the STAT TESTS handout, and be prepared
for a quiz on both readings. The quiz will be closednotes. For the STAT
TESTS handout, you should read the entire handout and thoroughly memorize
lines 1, 2, 5, 7, 8 and A. (The rest need to be memorized later.) 

T 2/25/14 
No class (Diversity Day). A
double assignment is posted for tomorrow. 

W 2/26/14 
HW due: 

Th
2/27/14 
HW due: Complete all
previously assigned HW. 

F 2/28/14 
HW due: 

M 3/3/14 
Snow day. 

T 3/4/14 
HW due: Read pp. 583597;
write #10.79 on p. 577, using full PHASTPC procedures. 

W 3/5/14 
NORMAL CLASS DAY, EXCEPT ON FRIDAY SCHEDULE. The event that Mr. Hansen was originally scheduled
to attend today has been canceled. 

Th
3/6/14 
HW due: Write #11.29,
11.30, and 11.31 on p. 615. Full PHASTPC procedures are needed for #11.31. 

F 3/7/14 
HW due: Get fully caught up
on all previously assigned problems. PHASTPC means that all 7 steps must be
evident. 

M 3/10/14 
HW due: Get some good
sleep! Enjoy the beautiful weekend weather! 

T 3/11/14 
HW due: Write #11.43abcd on
p. 619. Work is required, and full PHASTPC steps are required for part (c).
Part (d) is given below. 

W 3/12/14 
HW due: Read pp. 619626;
write #11.44 and 11.45 on p. 626, using full PHASTPC procedures. 

Th
3/13/14 
HW due: Read pp. 629632, 633634;
write #11.65 and #11.72 on pp. 635637. 

F 3/14/14 
HW due: Read pp. 647656;
write #12.1 and 12.2 on pp. 656657, and (if you have not already done so)
enlarge yesterday’s HW to include full PHA(S)TPC procedures. The “S” is optional
but recommended. 

M 3/17/14 
Snow day (no school). Happy
St. Patrick’s Day! 

T 3/18/14 
HW due: Read pp. 660671,
and bring a pack or two of Pretzel M&M’s to class. Reading notes are
required, as always. 

W 3/19/14 
HW due: Read this
recent article, which proves (does it not?) that you already know more
than whoever wrote the “Results” section of this
abstract of a scholarly article from a prestigious medical journal. Well,
maybe the proof is not immediate. To prove that you do, in fact, know more
than the author of the “Results” paragraph of the JAMA abstract, rewrite the
offending final sentence of the “Results” paragraph. You may split the
sentence into 2 sentences if you wish. 

Spring break.
Your quarter grade will be emailed to you by approximately March 31 or April
1. 


M 3/31/14 
HW due: Read How to Lie with Statistics (or, if you
borrowed a longer book from the STAtistics library,
read that instead). There will be a quiz tomorrow. 

T 4/1/14 
Quiz on How to Lie with Statistics or another
book you may have borrowed during spring break. Turn your book in before you
take the quiz today. 

W 4/2/14 
Memorization quiz on the assumptions that must be checked for the following tests: 

Th
4/3/14 
HW due: Until further
notice, your assignment each night is to do a mixture of at least 35 minutes
of problems from the Barron’s AP review book and/or the AP
archives. 

F 4/4/14 
HW due: Barron’s AP review
as described above. 

M 4/7/14 
HW due: AP review. 

T 4/8/14 
HW due: AP review. 

W 4/9/14 
HW due: AP review. 

Th
4/10/14 
HW due: AP review. Another quiz
is extremely likely. 

F 4/11/14 
HW due: AP review. Be
prepared to show your notebooks and time logs. 

M 4/14/14 
HW due: AP review, plus at
least one “vexing question” (see below). 

T 4/15/14 
Test (100 pts.) on ChiSquare and LSRL tTests 

W 4/16/14 
HW due: Even though there
is no class today (for Alumni Day), you still need to do at least 35 minutes
of AP review. Keep a written time log and a written record of the problems
you worked on. Freeresponse problems must be legible. If you have worked
more than 5 days per week, you can substitute one of your weekend days for
equal credit. 

Th
4/17/14 
HW due: Redo the entire test from Tuesday, 4/15/2014. Do all parts of
all problems, even if you are certain you did them correctly in class. Set a
timer for 39 minutes, but you may go longer if you wish, and you may use your
textbook and other notes if you wish. Collaboration with other students is
also allowed, but COPYING (AS ALWAYS)
IS PROHIBITED. Note: If you
prefer to do this assignment and yesterday’s AP review assignment in the
opposite order, that is permitted. 

F 4/18/14 
HW due: AP review problems.
Keep a time log. 

M 4/21/14 
HW due: In addition to your
usual AP review (with time log), do at least 4 TPCtype problems. These will
probably be collected. The 4 that were distributed in class Friday are recommended,
but any other 4 from the Barron’s review book are acceptable. 

T 4/22/14 
HW due: AP review with time
log. 

W 4/23/14 
HW due: AP review with time
log. 

Th
4/24/14 
HW due: AP review with time
log. 

F 4/25/14 
MPQ. 

M 4/28/14 
Practice AP Exam (70 points). 

T 4/29/14 
Practice AP Exam (70 points). 

W 4/30/14 
Practice AP Exam (70 points). 

Th
5/1/14 
HW due: Do the 3 problems
from Tuesday’s freeresponse “short format” test. Set a timer for 39 minutes.
The links were sent to you by email. Optional: If you have time, go ahead
and grade your answers as well. 

F 5/2/14 
HW due each day: Study for
your AP exam. Review problems, textbook review, and MustPass Quiz study are
all acceptable uses of your time. Keep a time log. Keep a dated record of all
your writtenout answers on filler
paper, not in the review book itself. 

F 5/9/14 
In class: Lastminute AP
questions. Those who are taking the AP exam in the afternoon will be excused
from class upon submission of an email
request before class starts. 

M 5/12/14 
MPQ. 

T 5/13/14 
MPQ. 

W 5/14/14 
MPQ. 

Th
5/15/14 
MPQ, with graded kickoff
quiz at the start of class. 

F 5/16/14 
MPQ. 

M 5/19/14 
MPQ. With any luck, Mr.
Joseph Morris (STA ’62) will sit in and cheer us on. Congratulations to
Jackson, both Nathans, Jack H. G., and Sammy. Time is running short for the
other 13! 

T 5/20/14 
Guest Speaker: Mr. Fred Richards, father of Peter Richards ’14, will speak on the
subject of big data and data analytics. 

W 5/21/14 
Field Trip to the NSA/National Cryptologic
Museum. Coat and tie are not
required (per yesterday’s lunch announcement by Headmaster Wilson), but
please wear a shirt with a collar.
We are ambassadors of STA and want to represent the school well. Bus departs
at 8:00 a.m. from the service road near the Martin Gym. We will be back on
campus by 1:15 p.m., in time for lunch. 

Th
5/22/14 
MPQ. 

F 5/23/14 
MPQ. 

M 5/26/14 
No school (Memorial Day). 

T 5/27/14 
Final Exam, 8:00–10:00 a.m., MH314. Attendance by everyone who still needs to pass the
MPQ is required. Attendance by spectators is encouraged. We may move to
MH102 if the examinees wish to do that, but the view is better from MH314.
Check for notes on the doors if you are having trouble finding the room where
the MPQ action is. 

Essential Links:
 STA School
Handbook
 College
Board: AP Statistics Course Description
 College
Board: more than 100 AP freeresponse questions and scoring rubrics from
previous years
 Our old textbook’s site has
online quizzes and some useful links
 RVLS (Rice Virtual Lab in
Statistics): One of the best sites anywhere for statistics! Here you’ll
find a complete college statistics course (complete with clickable glossary and great
case studies), simulations, and some excellent analysis tools.
 Virtual Laboratories in Probability
and Statistics (University of Alabama at Huntsville)
 StatCrunch
3.0 (formerly WebStat): An online statistical
computing package (requires Java)
 How to study
statistics (written by a professor at the University of Central Florida,
but the ideas are valid for our class)
 Eric Weisstein’s World of Mathematics: a monstrously
huge hyperlinked reference
 The MustPass Quiz for Statistics:
doubles as a review for the AP exam
TI83 Links:
 CINT (converts confidence interval from
interval notation to the more convenient “estimate ± m.o.e.” format)
 INVT (inverse t) program
written by Mr. Hansen and the Class of 1999
 CHISQGOF (ChiSquare Goodness
of Fit) program also written by Mr. Hansen and the Class of 1999
 CSDELUXE (ChiSquare Deluxe):
combines CHISQGOF and STAT TESTS C into one package; written by Mr. Hansen for
the Class of 2003
 Modifications to SCATRBOX program
so that it returns the LSRL equation at the end (followon to a stat teacher
workshop I attended on 12/5/2001)
 David Pachner’s statistical
test and confidence interval files
for the TI83 (added 4/16/2001; not reviewed by Mr. Hansen for accuracy)
 TI83 programs
from Texas Instruments
Philosophical Links:
 In praise of Bayes: a very readable overview of the tension between
the standard (“frequentist”) approach to probability
and the Bayesian view
Controversial Links:
 Does an elite
college really pay? Article addresses the issue of whether you would do
better financially if you simply invested the difference in tuition price.
 Does
traditional hypothesis testing actually make sense? Article questions
whether the entire second semester of our course is a waste of time . . .
 Are
law schools cooking their ranking statistics? Every high school statistics
student should read this (and maybe a second time, four years later).
Fun Links:
 Guessing
correlation coefficients by eye
 Another
correlation game
 Photos from our 5/20/99 field
trip to the National
Cryptologic Museum at the NSA
 Huge Internet gallery of statistics jokes
(warning: many are excellent, but some are dangerously lame)
 Average age at death for rock
stars is 36.9 (vs. 75.8 for the overall population). . . this site is
religiously oriented (and apparently sincere), but the reasoning process is
seriously flawed. Can you find the problem?
 Chance Database Welcome Page
(this is the link cited in the 4/4/99 Washington Post Unconventional Wiz
column)
 Accident statistics (the taxicab
problem)
 Psychological
probability quiz
 Marilyn is Wrong! (a truly
great site, even though it doesn’t seem to include Dr. Morse’s response to
Marilyn yet)
 Male sweat may be good for women’s health (a scholarly
article with p and tvalues from 2003, plus an abstract in
2007)
 Lying with
statistics
 One of the biggest marketing blunders of all time: the New Coke fiasco
 More fun links on Mr. Hansen’s home page
Serious Links (click here)
Extra Credit (please see me if
interested):
 American Statistical Association poster or
project competition, deadline 5/23/2014 if you desire extra credit
 Washington Statistical Society Curtis Jacobs Memorial Prize,
deadline 5/10/2014
 Other extra credit options are available under the Fun Links at modd.net
(see Mathcross Puzzles)
Group Projects (1998
onward):
Exploratory Data Analysis
 Assignment (200506)
 Results (199899)
 Results (19992000)
 Results (200001)
 Results (200506)
Opinion Survey
 Assignment (200001)
 Results (19992000)
 Results (200001)
Experimental Design and Execution
 Assignment (200001)
 Results (199899)
 Results (200001)
Pairs Project on How to Lie With Statistics and Pvalue
Calculations
 Assignment (200001)
 List of Partners (200001)
Critique of a Scientific Article
 Assignment
AP Review
 D period (199899)
 F period (199899)
Test #1 (Chapters 12 plus §3.1 of old
textbook), Sept. 2000:
 Test #1
Old Test #1 (Introduction
through Section 2.2 of old old textbook):
 Study guide
 Test #1Dhas a residual plot question
not found in the F period version
 Test #1F
Test #2, Oct. 1998:
 Mr. Hansen’s study guide
 Eric Love’s study guide
(1/12/1999 revised version)
 Test #2 (merged version, with
comments)
Test #3 (Chapter 5) for 19992000
 Answers to practice test (the practice
test was handed out in hard copy form on 11/15/1999)
 Takehome portion distributed
11/16/1999, due 11/17/1999
Old Test #3 (Chapter 4 of old old textbook):
 Study guide
 Test #3 (merged version)
 Answer key
Test #4 (Sections 5.1, 5.2, 6.1 of old old textbook):
 Study guide
 Test #4D
 Test #4F
Test #4 (Chapters 7 and 8 of old textbook:
random variables, binomial & geometric distributions):
 Actual test, 1/29/2004
Test #5 (Sections 6.2, 6.3, 7.1 of old old textbook):
 Study guide
 Practice test
 Answer key for practice test
(incl. correction to #18 suggested by C. Muller)
 Test #5 (merged version)
Test #5 (Sections 7.2 through 9.1 of old
textbook):
 Actual test, 2/6/2002
Test #6 (Sections 7.17.3 of old old textbook):
 Practice test
 Answer key for practice test
 Test #6D, with answer key
Test #6 (Chapters 9 and 10 of old
textbook):
 Actual test, 3/7/2002
Test #7 (Sections 8.18.3 of old old textbook, plus ChiSquare GOF):
 Answer key for sample test problems
 Inclass portion
 Takehome portion
Test #8 (Section 9.1 of old old textbook, plus Geometric Probability Distributions):
 Takehome test due Wednesday
4/28/1999
 Answer key (not yet released)
AP Exam Review
 Real
sample AP questions from the College Board
 TI83 Function Summary
 TI83 STAT TESTS Summary,
including the assumptions you need to check
 PHA(S)TPC procedures, a
systematic way of performing statistical tests and calculating confidence
intervals
 LSRL Top Ten
 Normal vs. Binomial: What are
the hallmarks and differences? (Includes many example problems, with
solutions.)
 Formula sheet markup guide
 Guide to standard error
formulas (third page of the AP formula sheet)
Question of
the day: 12/15/1998
Preview of
quiz for Wednesday, 11/18/1998
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home page
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