title: Gnuplot with Linear Regression
body: <p>I am trying to apply linear regression with (Fit(x)). Instead of having two columns in a data file, e.g. x and y values, this file have, for example, 5 columns. I want to pick the avg value of each column and feed it to the F(X) function.</p>
  
  <p>Data:</p>
  
  <pre><code>A   B   C   D   E
  2   2   5   10  20
  4   5   6   11  1
  6   8   7   12  4
  8   9   12  13  8
  10  11  10  14  17
  </code></pre>
  
  <p>Could I?</p>
  
  <p>Thanks for help </p>