← Back to Statistics
ANOVA
One-Way ANOVA
Compare means across three or more independent groups.
Calculation engine
Client-side JavaScript; no external statistics package is loaded.
Results are calculated in the browser and are not uploaded.
Client-side JavaScript; no external statistics package is loaded.
Results are calculated in the browser and are not uploaded.
Method overview
When to use
Use when one categorical factor has three or more independent groups and the outcome is continuous.
Input requirements
Enter one group per line. Values within each group can be separated by commas, spaces, or tabs. At least 3 groups are required.
Key assumptions
- Independent observations.
- Approximate normality within each group.
- Similar variances across groups.
Null hypothesis
H₀: all group population means are equal.
Method used
Classical one-way ANOVA F test.
References
- Fisher RA. Statistical Methods for Research Workers. Oliver and Boyd, 1925.
Data input and results
Use one group box per independent group. Add group names and a measurement unit to generate a simple GraphPad-style mean ± SD figure.
GroupnMeanSD
No calculation has been performed.