code: function() {
  			// Handle the single element case
  			if (this.length == 1) {
  				return this.arr[0];
  			}
  
  			// Sort the numbers
  			var nums = this.clone().sort();
  
  			// The third quartile is the median of the upper half of the numbers
  			return nums.slice(Math.ceil(nums.size() / 2)).median();
  		}
docs: Finds the third quartile of the numbers.  Returns the third quartile.