Intro
Logistical Bidness
Baby Shortridge
Getting ahold of me
Office Hours
Computer accounts?
Intro to S-Plus
History
Based on S
Vast statistical analysis environment
Originally command line and source script-driven interface
Windows versions have a GUI environment wrap on the original
Sometimes command line is still the way to go!
Resources
Help within SP2000
on-line
Becker, Chambers, & Wilks ("Blue Book")
Joel's Spatial S-Plus book
S-Plus data model and
environment
Object oriented
Parses well; generally knows what you mean
Irritating quirks crop up often - steep learning curve
What is S-Plus 2000?
I'm just learning it now
Lots is possible with the interface
Data import straightforward
Graphics are much easier
Script files vs. GUI
S-Plus Tutorial
Logging in at the Star
Lab
guest, no password, should work fine
Starting S-plus
In the Start/Programs/Splus menu
Visual Demo
In Help menu
Pay special attention to the data section
A bit of practice with
the GUI
Grab this Excel sheet with SAT score information;
copy it to the desktop
Import it into S-Plus
Summarize the US information (mean, variance)
Plot a histogram
Develop a linear regression model to predict score based on percent of
those who take the test
Look at summary plots. How good is the model? Which states are poorly modeled?
Running a script
At least at first the code for the homework will be done for you as a script
This is a sample script for you to examine
Download it to the desktop
Run the script from inside S-Plus
use sink("filename")
to
send text output to a file rather than to the screen
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G274 TA Page