Texas Education Agency
Texas Gateway: Evaluating Methods of Sampling From a Set of Data
Given a problem situation, the student will evaluate a method of sampling to determine the validity of an inference made from the set of data.
Other
Berrie's Statistics Page: Central Limit Theorem
Brief definition and example of the Central Limit Theorem.
Web Center for Social Research Methods
Research Methods Knowledge Base: Probability Sampling
This site from Cornell University contains great information on random or probability sampling. Definitely a site worth checking out on the subject.
Khan Academy
Khan Academy: Cumulative Relative Frequency Graph Problem
Cumulative relative frequency graph problem.
Khan Academy
Khan Academy: Transforming Data Problem
It is very common to take data and apply the same transformation to every data point in the set. For example, we may take a set of temperatures taken in degrees fahrenheit and convert them all to degrees celsius. How would this...