title: calculating probability from long series data in python pandas
body: <p>I have a  data ranging from 19 to 49. How can I calculate the probability of the data occurred in between 25 to 40?</p>
  
  <pre class="lang-html prettyprint-override"><code>46.58762816
  30.50477684
  27.4195249
  47.98157313
  44.55425608
  30.21066503
  34.27381019
  48.19934524
  46.82233375
  46.05077036
  42.63647302
  40.11270346
  48.04909583
  24.18660332
  24.47549276
  44.45442651
  19.24542913
  37.44141763
  28.41079638
  21.69325455
  31.32887617
  26.26988582
  18.19898804
  19.01329026
  28.33846808
  </code></pre>