Calculate confidence intervals for survey data. Input sample size and percentage to determine accuracy range. Compare two percentages to assess statistical significance. Determine required sample size for desired accuracy.
by A PLUS A SAS★ 5.02 ratingsBusinessFreeData updated 2026-09-08
Track usage with detailed charts and historical data. Add multiple readings at once. Share readings via iCloud. View sample data for testing. Support unlimited meters and readings. Syncs with iOS 11.
The app calculates arithmetic mean, geometric mean, and harmonic mean. It also computes standard deviation and confidence intervals for saved data sets, with results available for emailing.