the web on sampling

The Web on Sampling

Surfstat © on non-random samples http://surfstat.newcastle.edu.au/surfstat/main/2-1-1.html
By the Annenberg/CPB Project ©
1. How Random Is Random? http://www.learner.org/exhibits/statistics/howrandom2.html
2. What Can Go Wrong? http://www.learner.org/exhibits/statistics/gowrong2.html
How Polls Are Conducted
by The Gallup Organization © at http://www.gallup.com/The_Poll/hpac.asp