If you wanted to prove a relationship between two things, where would you begin? Does aspirin really prevent heart attacks? Or does smoking cause cancer? How would you discover how Americans feel about a particular issue? The concepts of population, sampling versus census, survey and sample design, and sampling distribution are introduced to demonstrate the issues involved in designing an experiment.
Planning Data Collection
• UNIT 15: DESIGNING EXPERIMENTS
• UNIT 16: THE QUESTION OF CAUSATION
• UNIT 17: CENSUS AND SAMPLING
• UNIT 18: SAPLE SURVEYS