Official University policies on many issues are available here.
|Monday:||2:00 p.m. to 3:00 p.m.|
|Wednesday:||2:00 p.m. to 3:00 p.m.|
|Friday:||2:00 p.m. to 3:00 p.m.|
Additional times are available by appointment, and I usually have extra office hours before tests.
Some good news and some bad news:
The bad news is that the textbook is out of print and hence not readily available from bookstores, although you may find a used copy somewhere.
The good news is that the author (Prof. Oehlert) has generously made the book available as a no-cost download. Go to his page for links to the PDF file for the book itself and datafiles for examples and exercises from that book. You can also buy a hard copy version of that PDF file from Paradigm Copies.
We will use R.
Here is an introduction to R.
You may download R for Macintosh, Windows, and Linux from the R-Project home page.
We will use Prof. Oehlert's R package called Stat5303, which adds some extra commands that we will need.
The current version of this package is here. You will need to download and install two packages, but they will require several other packages, too, so it may take a while. Fortunately, you only need to do that once.
Then each time you start R you will need to use
library(Stat5303libs)to make the extra commands available in that R session.
Because typing in data is tiresome and can be a source of errors, the data from the homework problems and examples (from the text) are available as files that R can read. There are a couple of ways to get data into R.
Data sets for examples are named exmpl6.3 for example 3 from chapter 6.
Data sets for exercises are named ex3.1 for chapter 3, exercise 1, and
data sets for problems are named pr3.3 for chapter 3, problem 3.
Here are dataset files for R that you can download. So, for example---provided your machine is connected to the Internet---from within R you can use
resindata <- read.table("http://www.stat.umn.edu/~corbett/classes/5303/RDataFiles/exmpl3.2",header=TRUE)to save the data for Example 2 from Chapter 3 as a data frame called "resindata".
When you are not connected to the Internet, you could use
resindata <- read.table(file="exmpl3.2",header=TRUE)This would allow you to load data into R without an active Internet connection, but of course you have to already have downloaded the file to your machine.
Russ Lenth at the University of Iowa has also provided two R packages that
include the data sets from the book.
One package is for Mac (and Linux), the other is for Windows.
You can get these here.
Note that the data set names, variable names, and variable codings in the oehlert data package and the direct-web-accessible data files may not be the same.
Comments? Questions? Send me an e-mail note: email@example.com