title: calculate probability and draw a cdf in Excel
body: <p>Now I have a column of data like this:</p>
  
  <pre><code>0.000000
  0.000000
  0.000000
  0.000000
  0.024995
  0.024996
  0.024996
  0.024997
  0.024997
  0.024997
  0.024997
  0.025004
  0.025010
  0.025011
  0.025996
  0.025996
  0.025996
  </code></pre>
  
  <p>First I want to calculate the cumulative probability of these data, and show them in column B, then based on Column A and B, to draw a CDF graph.</p>
  
  <p>Anyone one knows what formula should I use?</p>