Calculates the weighted average of two or more numbers

Weighted Average in Javascript.js

/**
 * Calculates the weighted average of an array of numbers.
 *
 * @param {number[]} nums - The array of numbers to be averaged.
 * @param {number[]} weights - The array of weights corresponding to each number in `nums`.
 * @return {number} The weighted average of the numbers.
 */
const weightedAverage = (nums, weights) => {
    let sum = 0;
    let weightSum = 0;

    for (let i = 0; i < nums.length; i++) {
        sum += nums[i] * weights[i];
        weightSum += weights[i];
    }

    return sum / weightSum;
};

weightedAverage([1, 2, 3], [0.6, 0.2, 0.3]); // 1.72727