Study design videos

Statistical questions

Statistical and non statistical questions

Reasonable samples

Identifying a sample and population

Examples of bias in surveys

Correlation and causality

Example of undercoverage introducing bias

Picking fairly

Techniques for random sampling and avoiding bias

Techniques for generating a simple random sample

Types of statistical studies

Worked example identifying observational study

Worked example identifying experiment

Worked example identifying sample study

Appropriate statistical study example

Introduction to experiment design

Matched pairs experiment design