title: How to get the correlation between two selected columns in a DataFrame using .corr() Pearson Correlation
body: <p>I am working with a big DataFrame. But I am trying to get correlation between two columns. I used this code:<br>
  <code>corr_P=Top15['Energy Supply per Capita'].corr(Top15['Energy Supply per Capita'])</code></p>
  
  <p>It gives me an error saying:<br>
  <code>'sqrt' method is not available for 'float' type.</code> </p>
  
  <p>It's an assigment I have to use ".corr() method, (Pearson's correlation)".</p>