Khan Academy Static

“A new study shows that people who eat lobster regularly tend to live longer.” That may be true, but it doesn’t necessarily mean that eating lobster causes people to live longer. We could set up an experiment to find out if lobster is truly the cause. This tutorial covers the difference between observational studies and experiments.

4685_Correlation_and_causality.html

4684_Types_of_statistical_studies.html

4686_Appropriate_statistical_study_example.html