Paste paired observations, inspect a scatter plot and fitted line, predict Y and export residuals. Aggregate-sum mode remains available without an invented chart.
Quick start
Paste paired observations, inspect a scatter plot and fitted line, predict Y and export residuals. Aggregate-sum mode remains available without an invented chart.
1
Replace the example with your values and check units.
2
Select Calculate and review the result below.
3
Save CSV, JSON or a printable report from the last calculation.
Reviews are checked before publication. We publish genuine positive feedback and specific criticism. Spam and insults without useful detail are not published; profanity and personal details are masked. Positive votes are counted immediately; negative votes are counted after review.
Reviews reflect users’ experiences, not a guarantee of results or a description of the service limits. Use the rating buttons above to leave a review.