Agreement analysis
Compare paired measurement methods using differences, agreement limits and a separate confidence interval for mean bias.
Paste comma-separated CSV with a header and 2 to 2000 complete rows. Use dot decimals with at most six decimal places and values from -1000000000 to 1000000000. No missing values are silently dropped. Extra columns are used only to preserve the original input in reports. Calculations use the required columns only. Processing stays on your device. Results use floating-point arithmetic. Charts show the supplied sample, not proof about a population. Choose agreement coverage from 80 to 99.9 percent. Use x and y columns for measurements of the same item in the same units. Difference is y minus x. Agreement limits are mean difference plus or minus a normal critical value times sample SD. The bias interval is a separate Student t interval for the mean difference, not an interval for either agreement limit. Pairs must be independent, with approximately normal stable differences. Repeated measurements need a different model. Limits do not determine acceptable agreement or give clinical advice. Search and sort change this comparison only. Copy result copies the summary. Download JSON or CSV for all observations, results, settings and method assumptions. Download SVG for the chart. One disposable worker per calculation, with a 10-second timeout. CSV supports up to 100 columns and 100000 cells through the shared parser. Paste comma-separated CSV with a header and 2 to 2000 complete rows. Use dot decimals with at most six decimal places and values from -1000000000 to 1000000000. No missing values are silently dropped. Extra columns are used only to preserve the original input in reports. Calculations use the required columns only. Processing stays on your device. Results use floating-point arithmetic. Charts show the supplied sample, not proof about a population. Choose agreement coverage from 80 to 99.9 percent. Use x and y columns for measurements of the same item in the same units. Difference is y minus x. Agreement limits are mean difference plus or minus a normal critical value times sample SD. The bias interval is a separate Student t interval for the mean difference, not an interval for either agreement limit. Pairs must be independent, with approximately normal stable differences. Repeated measurements need a different model. Limits do not determine acceptable agreement or give clinical advice. Up to 1,000,000 characters. Review the settings before running.
Your result
How to use Agreement analysis
- Paste complete numeric CSV rows with the required headers. Preserve the original order for lag diagnostics.
- Choose the displayed method settings and review their assumptions.
- Read the chart and table, then download all observations, results and assumptions as JSON or CSV.
Useful next steps
Agreement analysis
Choose agreement coverage from 80 to 99.9 percent. Use x and y columns for measurements of the same item in the same units. Difference is y minus x. Agreement limits are mean difference plus or minus a normal critical value times sample SD. The bias interval is a separate Student t interval for the mean difference, not an interval for either agreement limit. Pairs must be independent, with approximately normal stable differences. Repeated measurements need a different model. Limits do not determine acceptable agreement or give clinical advice.
Keep the complete data trail
Search and sort change this comparison only. Copy result copies the summary. Download JSON or CSV for all observations, results, settings and method assumptions. Download SVG for the chart. Group labels are preserved. Numeric CSV inputs use a decimal point; editable numeric settings also accept the selected language’s decimal notation.