STA 2023 - Introduction to Statistics
Fall 2003
Please refer to this document whenever you have a question about
the course.
Updates and changes will be posted on the website.
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Course Description
STA 2023 is an introductory course that assumes no prior knowledge
of statistics but does assume some knowledge of high school algebra. Basic
statistical concepts and methods are presented in a manner that emphasizes
understanding the principles of data collection and analysis rather than
theory. Much of the course will be devoted to discussions of how
statistics is commonly used in the real world. There are two major
parts to this course:
I Data which includes graphical and numerical summaries to describe the distribution of a variable, or the relationship between two variables (chapters 1 and 2, approximately 6 weeks), and data production to learn how to design good surveys and experiments, collect data from samples that are representative of the whole population, and avoid common sources of biases (chapter 3, 1 week.)
II Probability and Inference using the language of probability and the properties of numerical summaries computed from a random samples (chapters 4 and 5, 2 weeks), we learn to draw conclusions about the population of interest, based on our random sample, and attach a measure of reliability to them (chapters 6, 7, 8, approximately 6 weeks).
Course Objective
The primary goal of the course is to help students understand how the
process of posing a question, collecting data relevant to that question,
analyzing data, and interpreting data can help them find answers to real
problems from their world.
For the first two weeks or so: http://www.stat.ufl.edu/~mripol/2023.htm
After Drop/Add, in WebCT: http://webct.ufl.edu
The course will make use of a password protected website inside WebCT, an integrated, Web based classroom management tool. It takes about a week and a half to get a final list of students from the registrar to create the student accounts and passwords. Once that is done, the course website will move to WebCT and instructions will appear on the class website on how to access it. For more information on WebCT, go to their homepage at: http://webct.ufl.edu.
In WebCT you will be able to:
Lectures are delivered live TRF 2nd period in Carleton Auditorium. The lectures will also be videotaped and available to view online. Students can choose to attend these live lectures, or to view the lectures online, regardless of which section they are registered for.
Live Lectures
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Online Lectures
Links to the videotaped lectures will be found at the class website.
A link to the free software needed will also be provided on the website.
You can watch these lectures on your home computer, with a 56K or better
modem and audio capabilities, after downloading the free software from
RealPlayer. You can also watch them from any computer on campus (CIRCA
labs or libraries) using your Gatorlink account and stereo mini headphones.
IMPORTANT
- We cannot guarantee that the online lectures will work well for
each of you. Be prepared to attend the live lectures if that turns
out to be the case. Some students find that the online lectures
are too slow, or they are frequently interrupted by "internet congestion".
These problems are worse if your internet connection is slow, or if you
try to watch them during very busy times - between noon and midnight, EST.
If you have difficulty watching the lectures online from home, try watching
them from a computer on campus. Also remember that everyone is welcome
to attend the live lectures, regardless of which section they are registered
for. As a last resort, you can purchase the videotapes (see below).
Slow Lectures?
Videotaped Lectures
Videotapes of the lectures will also be available for sale at TIS Bookstore
located at 1227 W. University Ave. These will be available on Saturday
for the lectures taught that week. Three lectures in one videotape
sell for approximately $10.
Starting the first week of classes, students are required to attend
Lab once a week, according to the section they are registered for.
In Lab, groups of around 40 students will meet with a TA to work on a simple,
hands-on activity related to the material being covered in class.
All labs will meet in Turlington 1315. Worksheets with instructions
for each Lab are included in the Course Guide (binder) that you buy at
University Copies and More. Students must bring these worksheets to Lab
each week. The worksheets must be turned in to the TA before leaving
Lab that day. They will be graded on a scale of 10 points.
Click HERE for Lab Section and TA information. |
Lab Attendance and Policies:
We will have online quizzes most weeks, once WebCT accounts have been created. These quizzes will cover a small amount of material, and are designed primarily to encourage you to keep up with the lectures (particularly if you choose to watch them on the web at your own pace).
Each quiz will be available from Friday morning to Monday afternoon. You will be allowed three attempts for each quiz each randomly generated, so the questions won't be identical. Given all these opportunities, all students should do extremely well on the quizzes. Hopefully they will serve the purpose of improving your grade in the class, as well as be an important tool in learning the material for the course. You can also print your quizzes and use them to study for exams. There will be no makeup quizzes for any reason. Instead, we will drop the lowest five grades for all labs and quizzes combined.
Problems with the Quiz Function in WebCT?
Quiz Grades: You have three tries for each quiz - the highest grade is automatically recorded. To see the recorded grade, click on "my grades" on the left menu bar. To review what you did wrong, check the "completed" link next to the quiz name, and then click on the hyperlinked numbers to see each try of the quiz. If any of your quizzes says "ungraded" next to it, email the course coordinator (STA2023C or Ripol inside WebCT) so it can be fixed.Check the settings on your computer to see if anything could be interfering with the quizzes - like turned off pop-up windows or cookies. If your Internet provider is Cox digital cable -be aware that it has a feature called "Zone Alarm", a firewall, that interferes with quizzes in WebCT. To turn it off, right click with your mouse and disable "ZA". You can turn this feature back on after you complete the quiz. Remember that you can do the quizzes from the computers on campus (CIRCA labs, libraries) or from a friend's computer - but make sure to log in to your own account. For further questions, contact the CIRCA help desk.
Nasty message saying
your time is up? Sometimes, when submitting one try of
the quiz you accidentally open the quiz again and that starts your next
trial of the quiz. This can happen if you use the "back" button on
your browser instead of WebCT's links. When you come in hours later,
it says your time has expired. You are still allowed to save the
questions and submit the quiz, even if the time is up, but you get very
annoying messages. You can ignore them, or email
the course coordinator (STA2023C or Ripol inside WebCT) so it can be fixed.
There will be four assembly exams, three night exams given during the term (each worth 100 points), and the last one during final exam week (worth 150 points). All of the exams will be completely in Multiple Choice format. Exams will cover a larger amount of material that the quizzes and will also place more emphasis in the understanding of concepts and ideas behind the formulas. Room assignments for each exam will be announced in class and on the website. Academic dishonesty on any exam will result in a grade of zero on that exam.
Assembly Exam Dates
Exam 1
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Tuesday, September 16, 2003
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8:20 pm 10:00 pm
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Chapter 1
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Exam 2
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Tuesday, October 7, 2003
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8:20 pm 10:00 pm
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Chapters 2, 3
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Exam 3
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Tuesday, November 4, 2003
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8:20 pm 10:00 pm
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Chapters 4, 5, 6
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Exam 4
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Monday, December 15, 2003
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3:00 pm 5:00 pm
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Chapters 7, 8
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Makeup Exam Policy
The notes used in the lectures are included in the Course Guide (binder)
you buy at University Copies and More. When you are following the
lectures, whether live, video taped or on the web, you should always have
the lecture notes in front of you. The instructor will go over the definitions
and theory, and work out the examples on the spaces provided.
10. Homework and Practice Questions
Homework
Below you will find a list of suggested homework problems from the
text, by section. These problems are assigned to help you master
the material and will not be collected. You can get help with these problems
from the tutors in the Tutoring Room.
Answers to odd numbered problems are available in the back of the text. An Instructor's Guide with Solutions to all homework problems is available on Reserve at Marston Science Library and is also available in the Tutoring Room.
Practice Questions in WebCT
In addition to the homework problems from the book, you will find in
WebCT some practice questions done mostly in multiple choice format.
These problems do not count for your grade, but are good practice for the
quizzes and exams. You can submit the answers to find out if they
are correct, and you can do the problems an unlimited number of times.
Doing homework problems using Minitab
Students also have the option to answer certain homework questions
from the textbook using Minitab, a statistical computer program.
Information about Minitab appears in the next section. The data sets
for most homework problems are included in the data disk that comes with
the textbook (the disk with the falling men), and are also available on
the publisher's website: www.whfreeman.com/ips4e/.
Section
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Suggested Exercises
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Ch 1 Looking at Data - Distributions
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1.1 Displaying Distributions with Graphs
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1.1 1.5 1.9 1.12 1.15
1.25
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1.2 Describing Distributions with Numbers
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1.44 1.54 1.59 1.61
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1.3 The Normal Distributions
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1.77 1.78 1.80 1.86 1.89
1.90 1.93 1.100 1.103
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EXAM 1
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Ch 2 Looking at Data - Relationships
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2.1 Scatterplots
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2.1 2.6
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2.2 Correlation
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2.33 2.34
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2.3 Least Squares Regression
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2.35 2.38 2.44 2.53
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2.4 Cautions about Regression and Correlation
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2.59 2.71 2.72
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2.5 The Question of Causation
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2.78 2.80 2.81 2.86 2.88
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Ch 3 Producing Data
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3.1 First Steps
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3.1 3.3 3.5
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3.2 Design of Experiments
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3.9 3.10 3.11 3.21
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3.3 Sampling Design
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3.36 3.37 3.51 3.53 3.55
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EXAM 2
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Ch 4 Prob. and Sampling Distributions
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4.1 Randomness
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4.6 4.7
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4.2 Probability Models
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4.15 4.17 4.19 4.30
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4.3 Random Variables
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4.41 4.42 4.43 4.45 4.51
4.52 4.55
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Ch 5 Sampling Distributions
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5.1 Sampling Distn. for Counts and Proportions
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5.1 5.3 5.4 5.12 5.13
5.19
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5.2 Sampling Distn. of a Sample Mean
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5.28 5.29 5.31 5.32
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Ch 6 Introduction to Inference
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6.1 Estimating with Confidence
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6.3 6.6 6.9 6.16 6.23
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6.2 Tests of Significance
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6.31 6.33 6.35 6.37 6.39
6.40 6.43 6.46 6.48 6.53 6.55 6.56
6.58 6.59
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6.3 Use and Abuse of Tests
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6.71 6.72 6.74 6.75 6.76
6.77
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EXAM 3
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Ch 7 Inference for Distributions
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7.1 Inference for the Mean of a Population
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7.2 7.3 7.4 7.5 7.6
7.10 7.13 7.14 7.15 7.20 7.21 7.23
7.42 7.44
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7.2 Comparing Two Means
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7.53 7.54 7.55 7.56 7.57
7.58 7.59 7.61 7.62 7.63 7.64 7.70
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Ch 8 Inference for Proportions
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8.1 Inference for a Single Proportion
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8.1 8.2 8.3 8.4 8.9
8.138.20 8.21 8.24
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8.2 Comparing Two Proportions
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8.31 8.32 8.33 8.34 8.48
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EXAM 4
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Minitab is a very easy to use, and powerful statistical computer package.
It is used by colleges, universities and businesses around the world, and
runs on most computer platforms, including Windows and Macintosh.
We will use Minitab in several of our Labs - the Lab Worksheets will give
you directions on how to use it. You can also use Minitab to solve
some of the homework problems assigned from the book. The data sets
for most homework problems are included in the data disk that comes with
the textbook (the disk with the falling men), and are also available on
the publisher's website: www.whfreeman.com/ips4e/.
Minitab is available at all the CIRCA Labs on campus. You can also
buy it for your home computer (or download the demo version - free for
30 days) at the Minitab website at www.minitab.com.
The TA's for the class will be available to answer questions about the
material covered in class, homework problems, etc, in the Tutoring Room
located in Griffin Floyd 104. It will be open approximately 40 hours
a week - the exact hours of operation will be announced on the website.
There is no need to make an appointment, just go whenever it is convenient
for you and the TA on duty will help answer your questions.
Click HERE for Tutoring Room Hours. |
Grade Structure
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Grading Scale
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Exam 1
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100 points
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A
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537 600 points
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Exam 2
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100 points
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B+
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513 536 points
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Exam 3
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100 points
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B
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477 512 points
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Exam 4
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150 points
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C+
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453 476 points
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Labs and Quizzes
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150 points
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C
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387 452 points
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TOTAL
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600 points
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D
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360 386 points (No D+ given)
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E
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359 points and below
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Email
Email relating to information about the class should be sent inside
WebCT to your TA or the instructor. Your message will be answered within
two working days, in most cases. However, we ask you to please refer to
this Handbook and the course website to try to find the answers for yourself.
Questions regarding the material covered in class, homework problems, or
Lab should be asked in person, in the Tutoring Room, in Lab or in class.
Statistical questions often require formulas or pictures, which can make
it very hard to communicate by email.
Instructor's Honor Code
We the members of the University of Florida community, pledge to hold
ourselves and our peers to the highest standards of honesty and integrity.
Academic Dishonesty
We adhere to the University of Florida rules and guidelines for handling
instances of academic dishonesty. Please refer to the Office for Student
Services for detailed information about the current policies.
Students with Disabilities
Students who require special accommodations in class or during exams
should follow the procedures outlined by the Disability Resources Program
(http://www.dso.ufl.edu/drp/). Please
bring the course coordinator your letter of accommodations in the first
two weeks of classes, during office hours, or make an appointment if you
cannot make it during those hours. This letter must be discussed
with the course coordinator directly, not with the lab TA, for accommodations
on exams to be made.
Class Attendance and Behavior
Attendance to class is not mandatory, since you will be able to watch
the lectures online. Attendance to Lab, however, is mandatory, and you
are required to attend the Lab section for which you are registered.
For both Labs and lectures, we ask that you arrive on time, and to behave
in a respectful manner towards the instructors and your fellow students.
In fact, no one will be allowed in Lab if they are more than five minutes
late. Please turn your off cellular phones and refrain from eating,
drinking, reading newspapers, doing homework for other classes, and excessive
talking.
Makeup Quizzes and Labs
There will be NO makeup labs or quizzes under any circumstances - instead,
we will drop the lowest five grades for all labs and quizzes combined.
These five drops are meant to allow for missed labs or quizzes due to illness,
personal or family emergency, personal or University sanctioned travel,
religious observance, tardiness, laziness, and all other reasons.
Do not abuse your drops - you never know if you will need them later.
Makeup Exams
See the section on Exams for exam makeup policy.
Grading
Grades will be changed only when an error has been made; negotiation
is not appropriate.
Incompletes
Incompletes are only assigned when extraordinary circumstances (such
as an accident, or extended hospitalization), arising after the date for
dropping the course, prevent the student from completing the course requirements.
Having a failing grade in the course is not a valid reason for requesting
an Incomplete.
15. Where to Get Help for this course:
16. How to do well in the course: