Pooled summary statistics
Combine subgroup sample counts, means and standard deviations into overall summary statistics.
CSV header must be n,mean,sd. Up to 1,000 non-overlapping groups and ten million combined observations. Standard deviations use n−1. A group of one must have SD zero. Groups must measure the same variable and use the same units. This is not a meta-analysis. Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.
Your result
How to use Pooled summary statistics
- Enter the observations or summary values.
- Choose the method and check its assumptions.
- Review the result and download the calculation.
Useful next steps
Choose the model before reading the result
Combine subgroup sample counts, means and standard deviations into overall summary statistics.
Check the assumptions
CSV header must be n,mean,sd. Up to 1,000 non-overlapping groups and ten million combined observations. Standard deviations use n−1. A group of one must have SD zero. Groups must measure the same variable and use the same units. This is not a meta-analysis.
Keep the calculation
Download the JSON for unrounded results and settings, CSV for the table, and the separate assumptions note. The calculation runs in your browser.