This tool calculates the effect size between two variables, giving you a sense of how strong the difference really is beyond statistical significance. By uploading a spreadsheet and selecting two columns, you’ll receive effect size measures along with summary statistics and a visualization to aid interpretation.

Note: This is an educational tool. Do not use it for sensitive or confidential data.

How to Use

1. Upload your spreadsheet: Click the “Choose a spreadsheet file” button and select the file you want to analyze.

2. Select two variables: From the dropdown menus, choose the two columns you want to compare.

3. View your results: The tool will automatically generate summary statistics for both variables, Cohen’s d and Hedges’ g effect sizes, and a density plot comparing the two variables.

Tips & Reminders

1. Do not upload personally identifiable information.

2. If you’re unsure whether your dataset is appropriate, consult your organization’s data policy.

3. For detailed instructions or help interpreting results, visit the Technical Directions page.

4. Try the tool with our sample dataset.

Citation

If you use this tool in your work, please cite it as:

Courtney, M. B. (2023). Effect Size Explorer. Courtney Consulting LLC. (Date Accessed). https://www.freeanalyticstools.com/effect_size_explorer