Statistics · Module 12 · ANOVA: comparing many groups

ANOVA Walkthrough

See why running many t tests piles up false alarms, then watch group means spread apart while the spread inside each group stays put. Build SSB, SSW and SST, fill an ANOVA table row by row, read the F distribution and its right-tail p-value, check the assumptions, and learn what a significant result does and does not tell you. 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 ANOVA Lab. Every data set here uses made-up practice numbers chosen to look realistic. p-values come from an accurate F distribution CDF (regularized incomplete beta function); critical values are rounded to two decimal places to match printed F tables.