# # `avg()`

The avg method returns the average of all items in the collection:

    collect([1, 3, 3, 7]).avg();

    //=> 3.5

If the collection contains nested arrays or objects, you should pass a key to use for determining which values to calculate the average:

    const collection = collect([
      {
        name: "JavaScript: The Good Parts",
        pages: 176
      },
      {
        name: "JavaScript: The Definitive Guide",
        pages: 1096
      }
    ]);

    collection.avg("pages");

    //=> 636

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