# MATH 225{Introduction to Biostatistics

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```					                     MATH 225 – Introduction to Biostatistics
Carl Toews
Fall 2007

Welcome to Statistics! The objective of this course is to develop skills analyzing and interpreting statisti-
cal data. Although examples will be drawn principally from the realm of biology, the thrust of the course is
on the underlying statistical techniques, all of which have applications to a wide array of other phenomena.

Text: Biostatistics, by Marc and Mario Triola.

Class Hours: MWF, 11:00-11:50, 446 College Hall.

Course/Topic Agenda
Week    Sections          Descriptions
1       1.1-1.3           Intro to Data
2       2.1-2.2           Frequency Distributions
3       2.3-2.5           Mean and Variation
4       2.6-2.7,3.1-3.4   Exploratory analysis, Probability
5       3.5-3.6           Risks and Odds
6       –                 Review/Exam 1
7       4.2-4.4           Binomial Distribution
8       4.5               Poisson Distribution
9       5.2-5.4           Normal Distribution
10      5.5               Central Limit Theorem
11      –                 Review/Exam 2
12      6.1,7.1,8.1       Estimation
13      –                 No class
14      7.2-7.5           Hypothesis Testing
15      8.2-8.4           Inference
16      –                 Review

The prerequisites for this course are minimal, but include skill with basic algebra and trigonometry.
(Though as the mathematician Paul Halmos says, “The beginner should not be discouraged if he ﬁnds he
does not have the prerequisites for the prerequisites”–be bold, take the plunge.)

Homework and Participation (20%)
There are two canonical ways of learning mathematics: one is to do mathematics, the other is to talk about
mathematics. Homework and in-class participation are ways to cover both bases, and as such should be
viewed as means of mastering the material rather than objectives in themselves.
Homework will generally be assigned on Wednesday and collected the following Wednesday. Although I
will look at the homework, I will essentially only check completeness: in general, you will get full credit for
any reasonably complete problem set. However, it is your responsability to make sure you understand all
the homework problems! I will post solutions on-line, and you should check to make sure your answers are
correct.

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I will occassionally give in-class quizzes, sometimes announced, sometimes unannounced. The quizzes
will be designed to consolidate your understanding, and you will get full credit for any reasonable attempt.
There will be no make-up quizzes, however, so you might endeavor to come to class.

Exams (40%)
There will be two cumulative in-class exams, spaced at roughly equal intervals throughout the semester. If
everything goes according to plan, the ﬁrst will be on October 3, the second on Novermber 7th, but this
schedule is subject to revision. The best preparation for the exams will be the homework problems: make
sure you understand all assigned problems, and can solve them expeditiously.

Final (40%)
A comprehensive closed-book exam to be administered Monday, December 17th, from 8:45 a.m. to 10:45
a.m. in 446 College Hall.

Final grades will be assigned according to the percentages outlined above, with letter grades assigned ac-
cording to the usual scheme:
A      90-100
B      80-89
C      70-79
D      60-69
F      < 60
Pluses and minuses will be assigned to scores on the high or low ends of the scale, respectively.

Getting Help
Statistics can be diﬃcult: if you feel you need extra explantion on certain topics, seek out help as soon as
possible. Three obvious resources:
• Friends or classmates. Peers are a great resource, and working together is encouraged. (Caveat:
homework can be solved in groups, but should be written up independently.)
• Tutors. There is a designated tutor for this class, and you should feel free to take advantage of his or
her oﬃce hours. (Details will be announced as soon as they are known.)
• The professor. Nothing is worse than languishing alone in empty oﬃce hours: drop by, say hello, ask
questions. If my oﬃce hours don’t work for you, drop in some other time, shoot me an email, or give
me a call. (Contact information below.)

Statement on Disabilities
Students with documented disabilities are entitled to reasonable accommodations if needed. If you need
Duquesne Union (412-396-6657) as soon as possible.

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Contact Information
Carl Toews
College Hall 418
Tel: (412) 396-4851
toewsc@duq.edu
Oﬃce Hours : TTh 11-12:15, W 12-1, or by appointment

“Statistical thinking will one day be as necessary for eﬃcient citizenship as the ability to read and write.”
– H. G. Wells

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