ANOVA Calculator
ANOVA Results
| Group | Count | Mean | Std. Dev. |
|---|
| Source of Variation | SS | df | MS | F | P-value | F critical |
|---|---|---|---|---|---|---|
| Between Groups | - | - | - | - | - | - |
| Within Groups | - | - | - | |||
| Total | - | - | ||||
What is ANOVA?
ANOVA (Analysis of Variance) is a statistical method used to test differences between two or more means. It compares the amount of variation between groups with the amount of variation within groups.
When to Use ANOVA?
- Comparing means of three or more groups
- Testing the effect of a categorical variable on a continuous outcome
- Experimental designs with multiple treatment groups
How to Use This Calculator
- Set your desired significance level (α)
- Enter your data for each group (comma-separated values)
- Add or remove groups as needed
- Click "Calculate ANOVA" to see results
- Interpret the F-statistic and p-value to determine significance
Interpreting Results
If the p-value is less than your chosen significance level (α), you can reject the null hypothesis and conclude that there are statistically significant differences between at least two group means.
ANOVA vs. t-test
While t-tests compare exactly two groups, ANOVA can compare three or more groups simultaneously, controlling the Type I error rate.
Excel Integration
This calculator provides results comparable to Excel's Data Analysis ToolPak ANOVA function, making it perfect for verifying Excel calculations or performing quick analyses without spreadsheet software.