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STAT 112:
Introduction to Statistics
Fall 2003
Table of Contents
Course Description
Textbook
Computer Work
Recitation Sections
Homework Assignments
Quizzes
Exams
Grading Policy
Tutoring Center
Important Dates
Syllabus
Course Description
Who Should Be Taking This Course? STAT 112 is a required course
for students planning to enroll in the
McIntire School of Commerce.
If you want to take a statistics course only to satisfy the
College's natural science requirement then you should consider taking
STAT 110
rather than STAT 112. Students interested in the
Minor in Statistics and Data Analysis
should take either
STAT 500 or APMA 312 or
MATH 312.
STAT 112 cannot be used to meet requirements for the mathematics major.
The appropriate statistics course for mathematics majors is Math 312.
Prerequisites: The only prerequisite for STAT 112 is High School Algebra 2.
However, some students may find it useful to take
MATH 111
(Probability) before taking STAT 112. It is worth noting that entry to the Commerce
School requires, in addition to STAT 112, either Math 111 or Math 121. So students
opting for Math 111 would normally want to take that course before STAT 112.
Credit: 3 credits
Course Coordinator: Maria K. Pospieszalska (mkp5y@virginia.edu)
Office hours: WF 11:15 am  12:30 pm, HAL 110
Course Instructors and Classrooms:
Instructor 
Email Address 
Class Meeting 
Class Location 
Maria K. Pospieszalska 
mkp5y@virginia.edu 
Section 1: MWF 10:00  10:50 am 
GIL 130 
Maria K. Pospieszalska 
mkp5y@virginia.edu 
Section 2: MWF 1:00  1:50 pm 
MCL 1020 
Course Objective: STAT 112 is an introduction to the use of statistics for
the general college audience. Students learn how data are used to draw conclusions
about populations and processes. The course addresses several main topics:
 Descriptive statistics provides language for discussing data. This involves
graphic techniques (bar graphs, stemandleaf plots, histograms, regression lines)
and elementary descriptive statistics (mean, median, standard deviation, correlation,
regression coefficients, etc).
 Statistical experimental design is the art and science of producing reliable
statistical data. The course discusses the principal causes for bias in the collection
of data and in the design of experiments, as well as the techniques available to avoid
bias. This analysis involves the concepts of bias, controls, randomization, variability,
and statistical significance.
 Probability analyzes randomness. Its use in statistical analysis allows for the
quantification of statistical significance, accuracy, and confidence. The key topics here
are probability models, random variables, means, standard deviations, binomial and
normal distributions, and normal approximations.
 Statistical inference involves the application of descriptive statistics and probability
to the drawing of statistically significant conclusions about populations and processes.
For example, using statistical tests and confidence intervals, statisticians can estimate
population parameters precisely, and give measures of both the precision of the estimates
and the confidence they have in these estimates. The topics of inference discussed include
population means, frequency counts, and linear regression.
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Textbook
The textbook for this course is Introduction to the Practice of Statistics, fourth ed.,
by D. Moore and G. McCabe, published by W. H. Freeman & Co. The course covers material
from chapters 1, 2, 3, 4, 5, 6, 7, 8, and 10. See the course
syllabus
for more details. The text comes with a CD with additional material including
extra chapters and additional examples and projects in the form of a browser.
Back to Table of Contents
Computer Work
Minitab, a statistical computing package with a menudriven interface, is used in the course.
The Minitab program is available on Macs and PCs in all the ITC Public Computing labs
throughout the University. Because of license restrictions, ITC does not provide copies of
Minitab for use on private computers. Minitab can be downloaded for a 30day free trial,
rented for 5 months, or purchased from the eacademy's website at
http://www.eacademy.com/minitab.
The following are helpful : Brief Minitab User Guide and
Using Minitab: A Short Guide Via Examples.
The first guide is intended for quick reference. The second guide provides lots of details,
including screenshots, and is very helpful for learning to use the package.
Computer Help Sessions: Optional weekly computer help sessions start on Monday,
September 1st and are held according to the following schedule:
Monday: 7:00  8:00 pm, MEC 216
Monday: 8:00  9:00 pm, MEC 216
Tuesday: 7:00  8:00 pm, MEC 216
Tuesday: 8:00  9:00 pm, MEC 216
You are encouraged to read relevant sections in the computer help guides described above
before coming to the sessions. You are welcome to come to the computer help sessions with
any course material or homework questions, however, the MINITAB questions will be given
priority.
Data for Solving Problems Using Minitab: You can download data sets corresponding to
various exercises and tables of the textbook by clicking on
DATA.
This data also appears on the CD that comes with the textbook.
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Recitation Sections
Each student of Stat 112 must be concurrently enrolled in one of 22 recitation sections.
See the
Course Offering Directory
for details.
Weekly recitation sections start on Wednesday, September 3rd.
Instructors:
KuoChen Chan (kc8f@virginia.edu)
Nadya Filipova (nif2x@virginia.edu)
Thomas Gwise (teg7a@virginia.edu)
Jeesang Jung (jj9y@virginia.edu)
Craig O'Brien (cwo2d@virginia.edu)
Matthew Soukup (mjs5b@virginia.edu)
Kenneth Strazzeri (kcs6g@virginia.edu)
The recitation sections are an essential part of the course and your attendance at YOUR
recitation section is expected. The instructors discuss the weekly assigned practice
problems listed in the
syllabus,
answer your homework and course material questions, and conduct review in the week
preceding an exam.
Do not hesitate to contact your recitation section's instructor any time you need help.
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Homework Assignments
Each week's homework assignment is collected on Wednesday of the following week at the
BEGINNING OF THE CLASS (with the exception of homework assignment #13 that will be
collected at the beginning of Monday's class, on December 1st).
Refer to the syllabus
for homework assignments. Each homework set is spotgraded for up to 10 points
(up to 2 points for each of two randomly selected problems, and up to 6 points for
overall effort).
Solutions to the homework problems are posted on the Toolkit Stat 1121
and Stat 1122 websites in Materials by 5:00 pm on the day the homework
assignment was collected.
Homework Policy:
 UNDER NO CIRCUMSTANCES WILL LATE HOMEWORK ASSIGNMENTS BE ACCEPTED.
 Homework assignments are not pledged, and students are encouraged to collaborate
with each other. However, the work you hand in should be based on your own understanding;
in particular, blatant copying of another student's work is not permitted.
 Each homework assignment must begin with a clearly visible (at least 2" x 5") header
centered at the very top of the first page. Refer to the
Homework Header
for details. There is a 1 point deduction for a homework assignment without the header.
 In order to get the maximum 2 points for a problem, the solution process must be
written clearly, must follow the methods and formatting specified in the problem (if any),
and result in a correct answer.
 You must use Minitab if the problem is marked with an astersk. Otherwise, you may not
use any computer software. (The large data sets for the homework problems are on the CDROM
that comes with the textbook in files PCDataSets/MINITAB/Ch../EX.._....MTP or TA.._....MTP.
The CHEESE and CSDATA data are in the CDROM's Appendix folder.)
 Homework sheets MUST BE STAPLED together; removable paperclips or dogears are not
sufficient. There is a 1 point deduction for a homework assignment that is not stapled.
 All parts of a solution to a problem, including Minitab results, must be stapled
together in sequence (parts a, b, c, etc.). Solutions to the homework problems MUST BE
stapled IN THE EXACT ORDER THAT THE PROBLEMS ARE LISTED in the homework assignment. Grade
points lost because of a misplaced problem solution, or part of a problem solution, may
not be recouped.
Homework Graders:
Grader 
Email Address 
Assignments Graded 
Shikha Chaturvedi 
sc3jf@virginia.edu 
A to L of Section 1 
Andrew Reistad 
akr4z@virginia.edu 
M to Z of Section 1 
Shikha Chaturvedi 
sc3jf@virginia.edu 
A to Z of Section 2 
The graded homework assignments are returned in class on Wednesdays, seven days after they
were collected. Unclaimed homework can be pickedup in the basement of Halsey Hall.
For questions concerning your homework grade please email your homework grader
directly.
Suggestions Regarding Homework Assignments:
DO NOT WAIT UNTIL THE WEEKEND TO START THE HOMEWORK PROBLEMS. After each
Wednesday's class a sufficient part of the material will have been covered to work the
next homework assignment, and you should begin. Please read the homework material and
have your questions ready before you go to your recitation section or a computer help
session. With the exception of the classes just before the exams, there will be NO
DISCUSSION OF THE CURRENT HOMEWORK ASSIGNMENT on Mondays.
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Quizzes
Every Friday, except in weeks 1,8,12,14 and 15, there is a short, tenminute quiz held
at the beginning of the class. Students taking the quiz are expected to stay in the
classroom until the end of the session.
The Friday quizzes are based on material corresponding to the homework assignment turned
in on the preceding Wednesday. Each quiz is composed of four, multiplechoice problems
worth 2.5 points each.
Quiz Policy:
 The quizzes are closedbook, closednotes, and formula sheets are not allowed.
 You may use a calculator, TI83 or similar. Laptop computers, etc., are not
permitted. STUDENTS ARE NOT ALLOWED TO SHARE CALCULATORS. On your calculator you may
perform only basic algebraic operations, calculations of sample mean, sample standard
deviation, sample correlation, and parameters of leastsquares regression lines.
Otherwise you must use the tables provided by the quiz worksheet. Only results based
on these tables are accepted.
 Students MAY NOT ASK QUESTIONS during the quizzes.
 THERE ARE NO MAKEUP QUIZZES.
Quiz Graders:
Grader 
Email Address 
Quizzes Graded 
Nadya Filipova 
nif2x@virginia.edu 
Section 1 
Jeesang Jung 
jj9y@virginia.edu 
Section 2 
The graded quizzes are returned in class on Fridays, seven days after they were
collected. Unclaimed quizzes can be pickedup in the basement of Halsey Hall.
For questions concerning your quiz grade please email your quiz grader directly.
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Exams
There are two midterm exams and a final exam. Section 1 exams will be
in WIL 402. Section 2 exams will be in WIL 301.
 Midterm Exam I: Thursday, October 16, 7:00  9:00 pm.
Exam is based on all the material covered in weeks 17 (see
syllabus
). It is composed of 25 multiplechoice questions worth 1 point each.
 Midterm Exam II: Thursday, November 13, 7:00  9:00 pm.
Exam is based on all the material covered in weeks 811 (see
syllabus
). It is composed of 25 multiplechoice questions worth 1 point each.
 Final Exam: Friday, December 12, 7:00  10:00 pm.
Exam is be based on all the material covered throughout the course (see
syllabus
). It is composed of 33 multiplechoice questions worth 1 point each.
Please mark the exam times on your calendar and DO NOT MAKE ANY PRIVATE PLANS
FOR THAT TIME. In particular do not buy airplane tickets for these dates!
A makeup exam can be given only if you have a conflict with another class/exam
or you have at least three exams (including the Stat 112 exam) in 48 hours.
Refer to the
Makeup Exam Schedule
for details.
How To Request a Makeup Exam?
 To request a makeup exam for Midterm Exam I or Midterm Exam II please complete
the
Makeup Midterm Exam Request Form
and return it to the class instructor not later than the Friday preceding the exam.
 A MAKEUP EXAM FOR THE FINAL EXAM MUST BE APPROVED BY YOUR DEAN. The procedure and
deadline vary by school. In the School of Arts and Sciences the request must be
submitted on a form provided by the Dean's Office, and the deadline is Monday,
December 1st. DO NOT MISS YOUR DEADLINE! A copy of the Dean's approval must be turned
in to your class instructor not later than Friday, December 5th.
Exam Policy:
 YOU MUST HAVE A PICTURE ID with you for the exams.
 You must use a #2 pencil on the bubble sheet; ONLY BUBBLE SHEETS ARE GRADED.
 All exams are closedbook and closednotes.
 You are allowed to use one, 8.5"x 11" sheet of paper with your notes
written on both sides. You may not have more than ONE sheet of notes at any exam.
You may not borrow a note sheet from another student.
 You may not have any loose sheets, other than your one sheet of notes, on your desk
during the exam. Please write your calculations on the blank sides of your exam boolet.
Also, TABLES attached to your exam booklet MUST REMAIN STAPLED TO YOUR EXAM BOOKLET 
DO NOT SEPARATE!
 You may use a calculator, TI83 or similar. Laptop computers, etc., are not
permitted. STUDENTS ARE NOT ALLOWED TO SHARE CALCULATORS. On your calculator you may
perform only basic algebraic operations, calculations of sample mean, sample standard
deviation, sample correlation, and parameters of leastsquares regression lines.
Otherwise, you must use the tables attached to the exam booklet. Only results based on
these tables are accepted.
 YOU MAY NOT ASK QUESTIONS during the exams.
 At the end of the exam session both the bubble sheet and the exam booklet with the
attached tables must be turned in to the exam administrators and your picture ID must
be presented.
How to Prepare for the Exams?
 Work systematically throughout the semester by attending all lectures and all
of your recitation sections, turning in all homework assignments, and being well
prepared for all quizzes.
 Focus on understanding the theory first, then how to apply it. It is not enough
just to know how to apply a formula; you also need to understand when it is
appropriate to use a given formula for a data set. Exam problems check both your
knowledge of concepts and your computational skills.
 You need to master all textbook material as listed in the
syllabus,
and all lecture material.
 You need to understand and be able to solve all quiz problems, and all homework
and practice problems as stated in the
syllabus.
 Before an exam, see how wellprepared you are by doing a corresponding exam from
the list of Spring 2003 Exams, posted on Toolkit in Materials.
 Optionally, you can also practice your skills by solving odd numbered
Supplementary Exercises;
answers are provided. Choose only those exercises that correspond to the material covered
in the course.
Exam Return Procedure:
The midterm exam booklets (but not the bubble sheets) are returned in class on the
Wednesday following the exam. Unclaimed exam booklets can be pickedup in HAL 110, WF
11:15 am  12:30 pm. The final exam booklets are not returned. They are kept on file in
the Department of Statistics.
Back to Table of Contents
Tutoring Center
The Department of Mathematics operates the
Math Tutoring Center
which offers free help in mathematics/statistics for all UVA students.
The Department of Mathematics also maintains a list of private tutors.
Back to Table of Contents
Grading Policy
There are a total of 14 homework assignments and 10 quizzes. The best 20 (any combination)
are used in determining the final grade.
All quizzes, homework assignments, and exams are given numerical scores that, at the end of the semester,
are recalculated to percent scores according to the following method:
Homework Assignments and Quizzes 
10% 
Midterm Exam I 
25% 
Midterm Exam II 
25% 
Final Exam 
40% 
A letter grade for the course is assigned based on your total percent score.
The following standard grading is used across all STAT 112 sections:
 If your total score is at least 90%, you will receive at least a grade of A.
 If your total score is at least 80%, but less than 90%, you will receive a grade
in the range of B to B+.
 If your total score is at least 70%, but less than 80%, you will receive a grade
in the range of C to C+.
 If your total score is at least 60%, but less than 70%, you will receive a grade
in the range of D to D+.
 If your total score is less than 60%, you will receive an F.
Low scores in each range receive a minus; high scores receive a plus.
The above grading policy is strictly enforced. NO CURVES ARE USED.
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Important Dates
Classes begin 
Wednesday, August 27 
Last day to drop  Varies by school
(Arts & Sciences: Wednesday, September 10) 
Last day to add  Varies by school
(Arts & Sciences: Friday, September 12) 
Reading days 
Saturday, October 11 thru Tuesday, October 14 
Deadline for requesting Makeup Midterm Exam I 
Friday, October 10 
Midterm Exam I 
Thursday, October 16, 7:00  9:00 pm 
Last day to withdraw 
Varies by school (Arts & Sciences: Wednesday, October 22)

Deadline for requesting Makeup Midterm Exam II 
Friday, November 7 
Midterm Exam II 
Thursday, November 13, 7:00  9:00 pm 
Thanksgiving recess 
Wednesday, November 26 thru Sunday, November 30 
Deadline for requesting Makeup Final Exam 
Varies by school (Arts & Sciences: Monday, December 1) 
Last day of classes 
Friday, December 5 
Final Exam 
Friday, December 12, 7:00  10:00 pm 
Back to Table of Contents
To print exclusively the syllabus click on
Printable Syllabus,
and then select the print option.
Syllabus
Week/Dates

Quiz 
Textbook Sections (omit Beyond
the basic topics)

Assignments

Week 1 Aug. 27Aug. 29

No 
1.1 
Homework Assignment 01
(due Sep. 03) (click on the link)

Week 2 Sep. 01Sep. 05

Yes 
1.1, 1.2, 1.3 
Homework Assignment 02 (due Sep. 10):
1.7, 1.12, 1.15, 1.16, 1.27*, 1.31*, 1.34, 1.49, 1.50, 1.55*
Practice Problems: 1.20, 1.24, 1.38, 1.59, 1.60, 1.61, 1.63, 1.64, 1.65, 1.66

Week 3 Sep. 08Sep. 12

Yes 
1.3, 2.1, 2.2, 2.3 
Homework Assignment 03 (due Sep. 17):
1.74, 1.79, 1.82, 1.87, 1.90, 1.92, 1.104, 1.105, 1.111*, 1.115*
Practice Problems: 1.72, 1.73, 1.80, 1.81, 1.83, 1.86, 1.91, 1.97, 1.98, 1.108

Week 4 Sep. 15Sep. 19

Yes 
2.4, 2.5, 3.1, 3.3 
Homework Assignment 04 (due Sep. 24):
2.9*, 2.20, 2.24, 2.34, 2.40, 2.46*, 2.52, 2.65, 2.74*, 2.77
Practice Problems: 2.19, 2.22, 2.31, 2.43, 2.44, 2.50, 2.53, 2.61, 2.69, 2.75

Week 5 Sep. 22Sep. 26

Yes 
3.2, 3.4, 4.1 
Homework Assignment 05 (due Oct. 01):
2.84, 3.7, 3.10, 3.12, 3.29, 3.40, 3.46, 3.48, 3.50, 3.54
Practice Problems: 2.86, 3.8, 3.9, 3.16, 3.17, 3.23, 3.34, 3.38, 3.52, 3.55

Week 6 Sep. 29Oct. 03

Yes 
4.2, 4.5 
Homework Assignment 06 (due Oct. 08):
3.60 (answer: a parameter or a value of a statistic?), 3.62,
3.65, 3,67, 3.72*, 3.73*, 4.17, 4.20, 4.23, 4.33
Practice Problems: 3.63, 3.68, 4.11, 4.13, 4.15, 4.21, 4.28, 4.31,
4.32, 4.34

Week 7 Oct. 06Oct. 10

Yes 
4.3, 4.4 
Homework Assignment 07 (due Oct. 15):
4.42, 4.45, 4.54, 4.61, 4.68, 4.75, 4.92, 4.94, 4.100, 4.125
Practice Problems: 4.55, 4.65, 4.97, 4.99, 4.105

MIDTERM EXAM I: Thursday, October 16, 7:00  9:00 pm as follows:
Section 1  WIL 402, and Section 2  WIL 301.
The exam is based on all the material covered in Weeks 17.
Week 8 Oct. 15Oct. 17

No 
Midterm Exam I review, 5.1 
Homework Assignment 08
(due Oct. 22) (click on the link)
Practice problems will be selected
by your Recitation Section instructor.

Week 9 Oct. 20Oct. 24

Yes 
5.1 (omit The continuity correction), 5.2, 6.1

Homework Assignment 09 (due Oct. 29):
5.2, 5.12, 5.16, 5.18, 5.20, 5.25, 5.29, 5.34, 5.43. 5.46
Practice Problems: 5.4, 5.6, 5.13, 5.19, 5.24, 5.32, 5.35, 5.39, 5.44, 5.47

Week 10 Oct. 27Oct. 31

Yes 
6.1, 6.2, 6.3 
Homework Assignment 10 (due Nov. 05):
6.6*, 6.11, 6.19, 6.20, 6.29, 6.34, 6.45, 6.48, 6.63, 6.64*
Practice Problems: 6.8, 6.9, 6.10, 6.23, 6.30, 6.32, 6.42, 6.47, 6.52, 6.53

Week 11 Nov. 03Nov. 07

Yes 
7.1 (omit The power of the t test and
Inference for nonnormal populations),
7.2 (omit Software approximation for the degrees of freedom)

Homework Assignment 11 (due Nov. 12):
7.4, 7.16*, 7.17*, 7.29, 7.30, 7.37, 7.58, 7.59, 7.65*, 7.86
Practice Problems: 7.5, 7.13, 7.34, 7.56, 7.74

MIDTERM EXAM II: Thursday, November 13, 7:00  9:00 pm as follows:
Section 1  WIL 402, and Section 2  WIL 301.
The exam is based on all the material covered in Weeks 811.
Week 12 Nov. 10Nov. 14

No 
Midterm Exam II review, 7.3 (omit The power of the
twosample t test) 
Homework Assignment 12
(due Nov. 19) (click on the link)
Practice problems will be selected
by your Recitation Section instructor.

Week 13 Nov. 17Nov. 21

Yes 
8.1, 8.2 (substitute all Wilson procedures with
standard procedures discussed in class) 
Homework Assignment 13
( !!!!!!!!! due Monday, Dec. 01 !!!!!!!!! ):
7.90, 7.92, 7.94, 7.98, 8.12, 8.13, 8.16, 8.18, 8.20, 8.26
Practice Problems: 7.95, 7.96, 7.97, 8.6, 8.10, 8.22, 8.24, 8.28,
8.30, 8.81(a,b only)

Week 14 Nov. 24

No 
10.1 
Homework Assignment 14 (due Dec. 03):
8.48, 8.50, 8,54, 10.4*, 10.12*, 10.16, 10.17, 10.20*
Practice Problems: 8.45, 8.46, 10.1, 10.2, 10.18

Week 15 Dec. 01Dec. 05

No 
10.1, Final Exam review 
Practice problems will be selected
by your Recitation Section instructor.

FINAL EXAM: Friday, December 12, 7:00  10:00 pm as follows:
Section 1  WIL 402, and Section 2  WIL 301.
The exam is comprehensive, based on all the material covered in the course.
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