Average length of the words in the string array in CSharp

using System;/*from   w  w  w  . j a  v  a  2s .  c  om*/
using System.Collections.Generic;
using System.Linq;
using System.Text;

public class MainClass {
    public static void Main() {
        string[] words = { "ch", "a", "blue" };

        double averageLength = words.Average(w => w.Length);

        Console.WriteLine("The average word length is {0} characters.", averageLength);
    }
}