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javascript/snippets/average.md

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+---
+title: Average of numbers
+type: snippet
+tags: [math]
+cover: interior-8
+dateModified: 2020-10-22T20:23:47+03:00
+---
+
+Calculates the average of two or more numbers.
+
+- Use `Array.prototype.reduce()` to add each value to an accumulator, initialized with a value of `0`.
+- Divide the resulting array by its length.
+
+```js
+const average = (...nums) =>
+  nums.reduce((acc, val) => acc + val, 0) / nums.length;
+```
+
+```js
+average(...[1, 2, 3]); // 2
+average(1, 2, 3); // 2
+```