title: Plot data on number line and colour
body: <p>I have two lists <code>predictedY</code> which contains <code>n</code> elements ranging from 0 to 1  and <code>unlabelledY</code> which contains <code>n</code> elements either 1 or 0. </p>
  
  <p>I wish to plot the value of <code>predictedY</code> on a number line and if the corresponding element in <code>unlabeledY</code> is a 1 to colour it red, otherwise colour it black. </p>
  
  <p>How can I do this?</p>
  
  <pre><code>predictedY =[0.456,0.962,0.231]
  UnlabelledY=[0,1,0]
  </code></pre>