Designing studies

Progress
Sampling and surveys
Experiments
Unit test
10 questions
Lessons
Sampling and surveysExperimentsUnit test
Sampling and surveys
Learn
Reasonable samples
Picking fairly
Inferring population mean from sample mean
Samples and surveys
Simulation and randomness: Random digit tables
Sampling methods review
Practice
Valid claims
4 questions
Practice
Making inferences from random samples
7 questions
Practice
Using probability to make fair decisions
4 questions
Practice
Experiments
Learn
Correlation and causality
Types of statistical studies
Appropriate statistical study example
Observational studies and experiments
Practice
Types of statistical studies
4 questions
Practice
Unit test
Test your understanding of Designing studies with these 10 questions.

It takes about 15 to 20 minutes to finish this test.