title: How to count outliers for all columns in Python?
body: <p>I have dataset with three columns in Python notebook. It seems there are too many outliers out of 1.5 times IQR. I'm think how can I count the outliers for all columns?</p>
  
  <p>If there are too many outliers, I may consider to remove the points considered as outliers for more than one feature. If so, how I can count it in that way?</p>
  
  <p>Thanks!</p>
  
  <p><a href="https://i.stack.imgur.com/KAqOG.png" rel="noreferrer"><img src="https://i.stack.imgur.com/KAqOG.png" alt="enter image description here"></a></p>