title: how to make a scatter with regression line graph in amcharts / highcharts?
body: <p>I read all amcharts and highcharts demo and cant figure out how to draw chart like </p>
  
  <p><a href="https://i.stack.imgur.com/3Rw0u.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/3Rw0u.png" alt="enter image description here"></a></p>
  
  <p>The issue I am having is the X axis is text, not numeric like most amcharts/highcharts demos are.</p>