Statistics · Module 10 · Chi-square tests

Chi-Square Tests Walkthrough

Watch counts pile up in categories, see expected counts fill a table, build the χ² statistic one cell at a time, and use the right tail of the χ² curve to test a die, candy colors, blood types and a two-way table. Go at your own pace. Nothing here is graded.

Speed

Think of it like this

Quick check

Wrong answers are fine here. Read why, then try again.

Dr. Akash Garg · Statistics Study Tools · CC BY-NC-SA 4.0
Use the left and right arrow keys to move between steps. Practice next in the Chi-Square Lab. Every data set here uses made-up practice numbers chosen to look realistic; they are not clinical or company reference values. p-values come from an accurate chi-square CDF (regularized incomplete gamma function) and are rounded to four decimal places.