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snippets/arrayAverage.md

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+### arrayAverage
+
+Returns the average of an array of numbers.
+
+Use `Array.reduce()` to add each value to an accumulator, initialized with a value of `0`, divide by the `length` of the array.
+
+```js
+const arrayAverage = arr => arr.reduce((acc, val) => acc + val, 0) / arr.length;
+// average([1,2,3]) -> 2
+```