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const SQRT_2PI = Math.sqrt(2 * Math.PI);
function cumulativeDistribution(z) {    let sum = z,        tmp = z;
    // 15 iterations are enough for 4-digit precision    for (let i = 1; i < 15; i++) {        tmp *= (z * z) / (2 * i + 1);        sum += tmp;    }    return (        Math.round((0.5 + (sum / SQRT_2PI) * Math.exp((-z * z) / 2)) * 1e4) /        1e4    );}
/** * A standard normal table, also called the unit normal table or Z table, * is a mathematical table for the values of Φ (phi), which are the values of * the [cumulative distribution function](https://en.wikipedia.org/wiki/Normal_distribution#Cumulative_distribution_function) * of the normal distribution. It is used to find the probability that a * statistic is observed below, above, or between values on the standard * normal distribution, and by extension, any normal distribution. */const standardNormalTable = [];
for (let z = 0; z <= 3.09; z += 0.01) {    standardNormalTable.push(cumulativeDistribution(z));}
export default standardNormalTable;