Finding Data on the Internet - A Journalist's Guide by Robert Niles. Basic data sources, as well as data sources for agriculture, aviation, crime, demographics, education, energy, people, health, immigration, investing, law, military, nonprofits, politics, and weather.
Data on the Net - search for social science data plus links to other archives of data.
DataFerret - demographic, economic, environmental, health and other datasets. Download the applet for your Web browser to extract data in various formats, customize and visually present it.
Statistical Resources on the Internet (University of Wisconsin-Milwaukee)
OFFSTATS Database (University of Auckland)
Statistics Every Writer Should Know by Robert Niles. Explains mean, median, percent; per capita and rates; standard and normal distribution; margin of error and confidence interval; and discusses data analysis and sample sizes.
Selecting Statistics - Bill Trochim's Center for Social Research Methods
A Policymaker's Primer on Education Research; How to Understand, Evaluate and Use It. Education Commission of the States (ECS) & Mid‑continent Research for Education and Learning (McREL)
STATS at George Mason - a non-partisan non-profit organization affiliated with the Center for Media and Public affairs analyzes statistics in the news especially in the areas of education and child rearing, drug use and abuse, public health and disease, polls and surveys, and gender issues.
Web Pages that Perform Statistical Calculation
Create a Graph - five types (bar, line, area, pie and xy axis) from the National Center for Educational Statistics' Kids Zone