title: firebase analytics: understanding user engagement
body: <p><a href="https://i.stack.imgur.com/BIQzO.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/BIQzO.png" alt="enter image description here"></a></p>
  
  <p>The image is from google blog <a href="https://firebase.googleblog.com/2017/05/whats-new-with-analytics.html" rel="nofollow noreferrer">https://firebase.googleblog.com/2017/05/whats-new-with-analytics.html</a></p>
  
  <p>Engagement per user is 12m 25s.</p>
  
  <p><code>game_board</code> takes up 90.4% of total engagement, however average engagement time is only 0m 54s for the <code>game_board</code> . </p>
  
  <p>How should I interpret the numbers?</p>
  
  <p>(avg engagement time x avg engagement count) / 12m 54s = 0.904 for <code>game_board</code>?</p>