Statistics 154 Home Page
Welcome to Statistics 154
Instructor: Robert Gould
TA: Deborah Wang
This homepage will be your link to information about this class. You can
travel to another page which lists office hours , exam dates , and other features.
You can view the course syllabus or
check office hours and locations.
You might also want to view the course outline
for the next few weeks. (Currently under construction.)
Also check here for the weekly computer essay
and homework problems.
You can visit the Mail Room if you want
to send a message to a classmate, the professor, or your TA.
But the most important feature is the Chat Room
feature, which allows
you to exchange ideas with, raise questions with, and assist your fellow
classmates.
Results of Midterm 2(and also Midterm 1).
Answers to Midterm 2.
For this last essay, I thought I'd give you the opportunity to
consider a fundamental question: what does "random" mean.
Once again, the inspiration for this question comes from
Marilyn vos Savant, the self-proclaimed world's smartest woman.
The complete question is here, and
you can go to the Chatroom to
discuss your ideas.
This week's essay
How to write a computer essay.
All problems are from Larsen and Marx:
Assignment 8, Due Friday, Dec. 1
- 5.3: 1,3,
- 5.4: 1,2,6,7,9
- 5.8: 1,3,4,5
- 7.1: 1,3
Hints to previous homework sets.
Previous Assignments
(NOTE: Click on a problem number to see if hints are available.)
Odd numbered problems have answers in the back of the text.
The Chat Room provides students in 154a with the ability to discuss
problems. Look here for the weekly computer essay, as well.
Care to send a 154 student a message?
Look here for e-mail addresses.
A Pair of Practice Problems
For the second midterm
- 3.9.7: Cards are dealt one by one off the top of a shuffled deck
until the first ace appears. On average, how many cards are above that
first ace?
- 3.9.9: An urn contains n chips numbered 1 through n. A sample of size
r (r < n) is drawn. What is the expected value of the sum of the chips
in the sample? The surprising thing here is that the
expected value doesn't care whether you drew with or without replacement.
- Solutions
Other Links of an Educational and Instructional Nature
- The Statistics Homepage
provides information about the Statistics Center and has links to interesting
data sets and problems.
- The Mathematics will
tell you everthing you ever wanted to know about the math department.
- The UCLA homepage offers
a "virtual tour" of the campus, as well as access to other campus
resources.
- The
Chance Homepage provides access to materials related to the Chance Course
at Dartmouth, which is an innovative probability and statistics course. There
are links here to interesting issues in the news about probability and statistics.
- The Libraries and Newstands page gives access to books, magazines, and articles online.
- Want to look at pretty pictures? Visit the Yahoo is a popular starting point,
providing searches organized by general categories.
- You might also try WWW Worm
Class Information
Cartoon of the Week.
3-D Image.
Either you get it, or you don't.
Comments, Criticisms, Questions?
.
Robert Gould
UCLA Department of Statistics
rgould@stat.ucla.edu
Cartoon of the Week.
3-D Image.
Either you get it, or you don't.