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binomialProportionCiWidth

Wilson interval width for a proportion.

binomialProportionCiWidth(successes: number, nTrials: number, z: number): number

Import​

const poker = require('poker-calculations');

ESM (Node):

import { createRequire } from 'module';
const require = createRequire(import.meta.url);
const poker = require('poker-calculations');

When to use​

Width of a Wilson (or chosen-z) interval for a binomial proportion — compare to wilsonScoreInterval.

How to use​

const successes = 42;
const nTrials = 100;
const z = 1.96;

const w = poker.binomialProportionCiWidth(successes, nTrials, z);
const interval = poker.wilsonScoreInterval(successes, nTrials, z);
console.log(w, interval.upper - interval.lower);

See also​

wilson-score-interval · monte-carlo-trials-for-wilson-half-width