Crash Course: Statistics #26 - Test Statistics

Test statistics allow us to quantify how close things are to our expectations or theories.

Instead of going on our gut feelings, they allow us to add a little mathematical rigor when asking the question: “Is this random… or real?” Today, we’ll introduce some examples using both t-tests and z-tests and explain how critical values and p-values are different ways of telling us the same information. We’ll get to some other test statistics like F tests and chi-square in a future episode.

Data, Graphing & Statistics, Probability
High School, College

What are you looking for?


Crash Course

Website URL

Type of Resource


Assigned Categories