title: How to detect outliers in an ArrayList
body: <p>I'm trying to think of some code that will allow me to search through my ArrayList and detect any values outside the common range of "good values."</p>
  
  <p>Example:
  100
  105
  102
  13
  104
  22
  101</p>
  
  <p>How would I be able to write the code to detect that (in this case) 13 and 22 don't fall within the "good values" of around 100?</p>