Strike rate & uncertainty
Design racing charts that show scale, missing data and the population behind the picture.
Descriptive rate and 95% Wilson interval. Not adjusted for the quality or composition of opportunities.
Enter your values, then
calculate or validate.
Use the result in context
Visual precision should follow the evidence available, not the number of pixels on the page.
No chart is based on a real tipster record or live racing feed.
This tool processes your inputs in the browser. Notebook storage and downloads are explained in the privacy note.