This blog post was written by Lauren Scott, Geoprocessing/Spatial Statistics Product Engineer in the Software Products Group at ESRI in Redlands.

There are a number of good resources where you can learn about the new regression analysis tools in ArcGIS 9.3.  The newest resource is a free one-hour Web seminar,  Regression Analysis Basics in ArcGIS 9.3, available for download from the ESRI Virtual Campus.

 Other Regression Analysis resources include:

• Regression Analysis Basics Documentation
• Ordinary Least Squares Regression Tool Help and Learn more about how OLS works
• Geographically Weighted Regression Tool Help and Learn more about how GWR works
• Interpreting OLS tool results
• Interpreting GWR tool results
• Several articles can be found in the Spring 2009 issue of ArcUser magazine [Try the Flip Page view of ArcUser!]:
• Answering Why Questions: An introduction to using regression analysis with spatial data;
• Regression Analysis Components;     and
• Applying Geographically Weighted Regression to a Real Estate Problem.
• GEOconnexion International Magazine, December/January 2009, includes an article titled Regression Analysis Tools for GIS Modeling
• Chapter 5, Analyzing Geographic Relationships, in The ESRI Guide to GIS Analysis, Volume 2 discusses regression analysis and some of the challenges when it is applied to spatial data.

Enjoy!