Math 221 Statistics
Summer 2007
TEXT: "Intro. to Business Statistics”
(5th Edition),
By Ronald M. Weiers
PROF. JAMES W. CHAIRES
e-mail jwchaires@hotmail.com
OFFICE M-3024 PHONE 301-322-0772
WEB PAGE:
http://academic.pgcc.edu/~jchaires
OFFICE HOURS
M 9:15-10pm
T
W 9:15-10pm
TH
COURSE SYLLABUS:
Math 221 is an introductory to statistical concepts and applications,
including probability, random variables, sampling, hypothesis testing,
regression, and ANOVA. One focus of the class is on using data for
discussion and analysis. Data from the fields of business and economics
should be a major focus for the course. Excel is to be included in both
presenting material and student assignments outside of class.
The grading system for the course is based on points. There will be four
(4) major exams given during the semester. Each exam is worth 100 points.
Don’t miss an exam - there are no makeups ! Each exam will be announced at
least 3 days in advance so you will have plenty of time to plan your
schedule. If you miss an exam, you will receive a zero (0). It is highly
unlikely that you can pass the course without all three exams so make an
effort to be in class.
Finally, there will be up to 4 quizzes throughout the semester. You may
drop your lowest quiz. If you miss a quiz for whatever reason, that
becomes your lowest quiz. Your four "best" quizzes will be worth about 25
points each (for a total of 100 points).
Your final grade for the course is based on the following scale:
A
B
C
D
F
=
=
=
=
=
90%
4 Exams
80%
up to 4 Quizzes
70%
60%
TOTAL
UNDER 300
400 points
100 points
500 POINTS
The computers for the course are the IBM compatibles micros located in
the various labs throughout campus. In the second week of class, a CIS
Info Sheet will be handed out. It contains vital information for CIS
students such as lab information, important dates in the semester, weather
cancellation information, bookstore hours, etc.
NOTE:
-You should have at least two 3½” diskettes: 1 original + 1 backup.
- ZIP (100’s, or 250’s) are better to have than 3½” diskettes.
-Dates on quizzes are random.
-Tests are in the 3rd week, 5th week, 7th week and during the final day.
-Attendance is not mandatory, but missing class work and notes is up to
the student to obtain from other students.
-Submitted work must be your own, copy other students projects results in
a zero for both students.
-Tape recorders are allowed in class.
-Cell phones should be OFF or on vibrator status.
-Eating and drinking in class or lab is not allowed.
-The PGCC handbook, which is published with a nice spiral bound
calendar/planner is free for students and can be picked up at the College
Life Office in Largo Student Center (near the bookstore). All official
policies relating to students are spelled out here.
Course Learning Objectives:
1. Produce histograms, scatter plots, box plots, and analyze information contained in them.
2. Compute and interpret information contained in statistical measures.
3. Compute probabilities of random variables using basic rules of probability.
4. Compute probabilities of random variables using the normal, student, and binomial
probability
distributions.
5. Compute confidence interval estimates for common statistical measures.
6. Use statistical testing procedures to perform hypotheses tests.
7. Compute linear regressions and correlation coefficients using data taken from various
sources.
8. Compute and use analysis of variance (ANOVA) measures to conduct hypothesis tests.
Course Outline:
1. Statistical Description of Data (1 ½ weeks)
a. Preview of the statistical process
b. Descriptive and Inferential statistics
c. Data display techniques
d. Computing statistical measures
2. Probability ((1 ½ weeks)
a. Basic probability rules
b. Intersections and Unions
c. Independence
d. Bayes’ Theorem
e. Counting Rules
3. Distributions of Probability (1 ½ weeks)
a. Discrete probability distribution measures
b. Binomial probability distributions
c. Continuous probability distribution measures
d. Using the Standard Normal distribution
e. Using a Normal distribution
4. Sampling Distributions and Hypothesis Tests (2 weeks)
a. Sampling Distributions and the Central Limit Theorem
b. Sampling Distribution of the Mean
c. Sampling Distribution of the Proportion
d. Point and Interval Estimates
e. Confidence Interval Estimates
f. Single sample Hypothesis Tests for Means and Proportions
g. Two sample Hypothesis Tests for Means and Proportions
5. ANOVA and Regression (1 week)
a. Basic concepts of ANOVA
b. One-Way ANOVA
c. Two-Way ANOVA
d. Linear Regression Models
e. Correlation
Attendance: Research on college success demonstrates that class attendance is a significant
factor in student success. Considerable material will be covered during each class session.
There will be discussion of assignments, and handouts will be distributed. If a student must
miss class, it is his/her responsibility to get the notes and assignments from a classmate and
check with the instructor regarding any handouts, etc., preferably prior to the next class period.
Prince George's Community College is committed to a policy of reasonable accommodation
and services to persons with disabilities. In order to receive services, students with disabilities
must register with the Disability Support Services. Call between 8:30 and 4:30 pm, Monday
through Friday, 301-322-0838 to schedule an appointment.
SUMMER 2007
Computer Lab Policies and Procedures
Most Math classes have some time scheduled in a computer lab. Whether you are in a class where you have all
or part of it regularly scheduled in a lab, please note the following policies regarding lab use:


Food, drink, and guests are not allowed in labs.
Know how to preview output on the screen for the software you are using. Ask your instructor, if
necessary. Print only when necessary, after making changes and corrections based on screen output.
Help us save paper and money!

When you‘re finished working and preparing to leave the lab, save and close your file and exit the
software you’re working in. Do not shut down or turn off the computer.
 If you have any problems with hardware or software in the lab classrooms, tell your instructor. He/she
will report them to the lab staff.
When you want to do computer work outside of class time, go to the open lab in Bladen Hall, Room 104, or the
Math Lab (3rd floor Marlboro).
Role of Lab Technicians
The technicians in the PGCC computer labs are there to assist students with the use of the computers and
software. That involves such help as how to turn on the computer, load a particular program and give its basic
commands (such as saving and printing), and possible hardware problems.
Lab technicians are not to provide more than limited help in debugging, problem-solving and program
development. Additional assistance in the understanding of concepts and assignments is available from the
course instructor and, for many courses, from the Tutoring Center located in Bladen Hall, Room 107.
The Tutoring Center and the Writing Center
The Tutoring and Writing Centers, both located on the first floor of Bladen Hall, provide free assistance to
PGCC students. It is expected that there will be tutors available for Math 221. Call 301-322-0748 or go to
Bladen Hall, Room 107 or the Math Lab in Marlboro to check on specific tutoring schedules and make
appointments.
College Closings
If an emergency develops requiring school closing, the following radio stations will be asked to announce the
closings: WMAL, WPGC, WRC, WTOP, WAMU, WAVA, WASH, WHUR, WWMX, and WGAY. The
following TV stations will also be asked to announce the closing: WRC (4), WTTG (5), WJLA (7), WUSA (9),
and News Channel 8. You may also call the college’s general number, 301-336-6000, where information about
closings will be posted. Please note that the college will have its own announcement which is separate from
that of the Prince George’s County Public Schools.
Open Computer Lab
The Open Computer Lab is located on the first floor of Bladen Hall, Room 104, and is available for walk-in use.
No food, drink, or guests are allowed in the open lab. Students are required to establish a user account in order
to log into the computers. To create a user account, please go to room B-102. User accounts from the previous
semester (Spring 2007) are still active. If there are any questions, please call 301-322-0999.
Lab hours are as follows:
Monday-Thursday
8:00 a.m.-10:00 p.m.
Friday
8:00 a.m.-5:00 p.m.
Saturday
8:00 a.m.-5:00 p.m.
College Bookstore The bookstore is located in Largo Student Center; its phone number is 301-322-0912.
Hours are Mon.-Tues. 9:00 a.m.-7 p.m., Wed.-Thurs. 9:00 a.m.-5:30 p.m., Fri. 9:00 a.m.-4:00 p.m.
TIPS FOR ACADEMIC SUCCESS
Take responsibility for your own learning!
Attend all classes, including lab sessions.
Read the textbook prior to each class meeting.
Ask questions and participate in class discussions. See your instructor
outside of class if you have other questions or concerns.
Read assignments carefully; start projects right away.
Look over class notes between classes.
Get the name and phone number of a classmate to call if you miss class or have questions.