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Evaluation confidence interval calculator

Calculate a 95 percent Wilson score interval for an observed evaluation success rate and compare its lower bound and width with customer-entered review thresholds.

Method and limits

  1. Observed rate = successful observations divided by all observations.
  2. The 95 percent interval uses the Wilson score method with z = 1.96.
  3. Interval width = upper bound minus lower bound.
  4. Threshold status requires both the entered lower-bound and maximum-width gates.

The calculation assumes a binomial outcome and independent observations. Sampling design, representativeness and release authority require qualified human review.