Khan Academy Static

Sampling_and_observational_studies

When we want to gather data from a large population, we survey or observe a sample from that population. This tutorial covers sampling and survey methods and the types of conclusions that can be drawn.

Experiments

Experiments allow us to see how a treatment affects changes in a response variable. This tutorial covers basic principles of experiment design.

Introduction_to_data

This tutorial covers the basic language we use when talking about data and different types of data.