title: Determining significant growth
body: <p>I have a collection of Facebook pages that I'm recording daily number of "Likes" for.</p>
  
  <p>I'd like to identify those which are growing the fastest. Problem is that I'm wondering how to remove the 'noise' of pages with a small number of likes and those with a great number of likes.</p>
  
  <p><img src="https://i.stack.imgur.com/NnNox.png" alt="facebook likes chart"></p>
  
  <p>Are there any general techniques or approaches for what I'm trying to do here?</p>