Don't have a handle on statistics, sampling, margin of error? MIT to the rescue for FREE [View all]

[Pretzel_Warrior]

take advantage of MIT's open courseware which provide you video lectures, reading material, sample problems, etc.

You, too, can begin to undertand the principles of statistical inference about a population based on a sample size.

Learn too how sample size relative to the population will affect the confidence interval and cost of executing the sampling.

Great for people who don't understand scientific polling.

http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-041-probabilistic-systems-analysis-and-applied-probability-fall-2010/index.htm