One-Way ANOVA Calculator

Summary

Enter up to 8 groups of data and instantly compute the F-statistic, p-value, and ANOVA table to test whether group means differ significantly.

How it works

1. Enter your data for each group, one value per line or comma-separated.
2. Add up to 8 groups using the "Add Group" button; remove unwanted ones with the X button.
3. Click "Calculate ANOVA" to compute the ANOVA table.
4. The tool displays SS (Between), SS (Within), degrees of freedom, mean squares, F-statistic, and p-value.
5. Compare the p-value to your chosen significance level (e.g. 0.05) to decide whether to reject the null hypothesis.
6. Review the group summary table for individual means, variances, and counts.

Use cases

• Compare test scores across three or more teaching methods.
• Analyze crop yields under different fertilizer treatments.
• Test whether customer satisfaction scores differ across product versions.
• Evaluate machine performance across multiple production lines.
• Check if response times differ between software algorithm variants.
• Assess blood pressure differences among multiple treatment groups in a clinical study.
• Compare employee productivity scores across different departments.
• Validate measurement consistency across several lab instruments.

Frequently Asked Questions