@technobuddha/library/src/mean.ts

A large library of useful functions

import { sum } from './sum.ts';

/**
 * Calculates the Operations mean (average) of an array of numbers.
 * @param numbers - An array of numbers to calculate the mean of.
 * @returns The mean of the numbers, or `NaN` if the array is empty.
 * @group Math
 * @category Statistics
 */
export function mean(numbers: number[]): number {
  if (numbers.length > 0) {
    return sum(numbers) / numbers.length;
  }
  return Number.NaN;
}