#quantile

Calculates the value at a q quantile using sorted values and linear interpolation.

import { Arith } from "@teakit/arith";

const values = ["10", "20", "30", "40"];

Arith.quantile(values, "0").toString(); // "10"
Arith.quantile(values, "0.5").toString(); // "25"
Arith.quantile(values, "0.75").toString(); // "32.5"
Arith.quantile(values, "1").toString(); // "40"

#API Reference

#Signature

Arith.quantile(values: readonly ArithValue[], q: ArithValue): ArithInstance;

#Parameters

#Returns

Returns sorted[lower] + (sorted[upper] - sorted[lower]) * fraction, where position = (n - 1) * q.

#Throws

• Throws if values is not a non-empty array.
• Throws if any value is non-finite.
• Throws if q is non-finite or outside [0, 1].

#Agent Contract

#Agent Notes

• Use quantile(values, q) rather than percentile; percentile is not a public API.
• Pass q as a value from 0 through 1, not as 0 through 100.
• The input array is sorted on a copy.