The help sections of the statistics packages are often helpful resources for refreshers on a concept you may have forgotten.  In particular, the help sections of StatPlus:Mac LE and SPSS have useful information.  The best resource available to you for a statistics refresher is Paula Lackie (x 5607, or email plackie). Helpful links to all-things-stats-related can be found (organized by category) at http://statlink.tripod.com/.

Additionally, there are online learning programs and tutorials available.

• Carnegie Mellon offers a free online program for learning statistics available here. It is extremely well done.
• ICPSR has many learning guides available in their online learning center.  For guides organized by type of analysis, go here.  ICPSR also has a help center with information on using data.
• http://www.teachingwithdata.org/
• http://statpages.org/javasta4.html
• UCLA has a beautiful table for choosing the appropriate statistical analysis .. including HOW TO DO IT in Stata & SPSS!  It's slightly out of date, but useful nonetheless.
• What the heck is the difference between Categorical, Ordinal & Interval data?  (psst: "categorica" is also called nominal and  "interval" is like scale or continuous.)

Helpful online glossaries of terms:

• A glossary of social science data terms is available here.
• NSF glossary of statistical terminology
• Internet Glossary of Statistical Terms
• Glossary of Terms for Metadata, Taxonomies, and Digital Libraries
• More information about data formats and file types from ICPSR

Additionally, there are links to guidance on choosing the right analysis method available:

• StatPages provides some decision trees and other helpful information
• An explanation of parametric vs non-parametric data

For help with qualitative analysis, you can check out this website:

• OnlineQDA

Below is a beginning list of file extensions & what they're usually associated with.