title: how to plot Probability density Function (PDF) of inter-arrival time of events?
body: <p>I have an array of data values as follows : </p>
  
  <pre><code>0.000000000000000000e+00
  3.617000000000000171e+01
  1.426779999999999973e+02
  2.526699999999999946e+01
  4.483190000000000168e+02
  7.413999999999999702e+00
  1.132390000000000043e+02
  8.797000000000000597e+00
  1.362599999999999945e+01
  2.080880900000000111e+04
  5.580000000000000071e+00
  3.947999999999999954e+00
  2.615000000000000213e+00
  2.458000000000000185e+00
  8.204600000000000648e+01
  1.641999999999999904e+00
  5.108999999999999986e+00
  2.388999999999999790e+00
  2.105999999999999872e+00
  5.783000000000000362e+00
  4.309999999999999609e+00
  3.685999999999999943e+00
  6.339999999999999858e+00
  2.198999999999999844e+00
  3.568999999999999950e+00
  2.883999999999999897e+00
  7.307999999999999829e+00
  2.515000000000000124e+00
  3.810000000000000053e+00
  2.829000000000000181e+00
  2.593999999999999861e+00
  3.963999999999999968e+00
  7.258000000000000007e+00
  3.543000000000000149e+00
  2.874000000000000110e+00
  ................... and so on. 
  </code></pre>
  
  <p>I want to plot Probability Density function of the data values. I referred <a href="https://en.wikipedia.org/wiki/Exponential_distribution" rel="nofollow">(Wiki)</a> and <a href="http://docs.scipy.org/doc/scipy/reference/generated/scipy.stats.gaussian_kde.html" rel="nofollow">scipy.stats.gaussian_kde</a>. but i am not getting that is correct or not. 
  i am using python. simple data plot code is as follows : </p>
  
  <pre><code>from matplotlib import pyplot as plt
  plt.plot(Data)
  </code></pre>
  
  <p>But now i want to plot PDF (Probability Density Function). But i am not getting any library in python to do so. </p>