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One-way ANOVA example

This example demonstrates how ANOVA compares multiple group means.

What this page gives you

  • Three-group dataset
  • Explanation of F statistic and p-value
  • Guidance on next steps after significance

Example input

Three groups (blank line separated):
10 12 9 11 10

14 15 13 16 14

20 19 21 22 20
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How to interpret

A significant F-test indicates at least one group mean differs.

ANOVA does not identify which groups differ.

Use post-hoc tests with multiple-testing correction.

FAQ

When do I use one-way ANOVA?
When comparing three or more independent groups.

What does ANOVA test?
Whether at least one group mean differs from the others.

Does ANOVA tell which groups differ?
No. Post-hoc tests are required.

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