Free interactive student tool
Free ANOVA Calculator
Free ANOVA Calculator. Start with one-way ANOVA; add repeated-measures/two-way only after validation.
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F = between-group mean square ÷ within-group mean square
How this tool reaches its result
One-way ANOVA compares variation among group means with variation within groups.
F = between-group mean square ÷ within-group mean square
Worked context
How to interpret the output
Three groups produce two numerator degrees of freedom; the denominator depends on total sample size.
Important limitation
What the result cannot decide for you
A significant omnibus test does not identify which pairs differ; post-hoc analysis may be needed.