Discussion:  All in Probability & Statistics 
Topic:  Sketchpad Scatterplot with LSRL and Residual Plot 
Related Item:  http://mathforum.org/mathtools/tool/491/ 
Post a new topic to the All in Probability & Statistics discussion 

Subject:  Sketchpad Scatterplot with LSRL and Residual Plot 
Author:  NateB 
Date:  Jan 23 2008 
don't know if anyone still cares...
I have made a Sketchpad file that shows a scatterplot with seven movable points.
The points can be moved around manually or sent to predetermined patterns to
study the effects on a dynamically placed LSRL. The value of correlation is
also visible. Residual plots are used, and can show that even if data has a
high correlation, it may not be best modeled by a line. One page of the sketch
focuses on transforming the data to find an exponential or power function to use
as a model. All of this is done without coordinates in a responsive and visual
setting.
The file (and others) can be found at:
http://nateburchell.googlepages.com/index.html
I tried to submit it as a tool here, but I'm not sure if it worked, as I am very
new to the Math Forum.
Thanks,
Nate
 
Post a new topic to the All in Probability & Statistics discussion  
Visit related
discussions: Scatterplot tool Probability & Statistics  