Khan Academy

Picking fairly (K-A)

Samples and surveys (K-A)

Statistical and non statistical questions (K-A)

Sampling methods review (K-A)

Statistical questions-video (K-A)

Techniques for generating a simple random sample (K-A)

Techniques for random sampling and avoiding bias (K-A)

Appropriate statistical study example (K-A)

Observational studies and experiments (K-A)

Types of statistical studies (K-A)

Worked example identifying experiment (K-A)

Worked example identifying observational study (K-A)

Worked example identifying sample study (K-A)

Combination example: 9 card hands (K-A)

Combination formula (K-A)

Handshaking combinations (K-A)

Intro to combinations (K-A)

Birthday probability problem (K-A)

Conditional probability and combinations (K-A)

Exactly three heads in five flips (K-A)

Example: Combinatorics and probability (K-A)

Count outcomes using tree diagram (K-A)

Counting outcomes: flower pots (K-A)

Example: Different ways to pick officers (K-A)

Example: Lottery probability (K-A)