text: # calculate and plot a white noise series
  from random import gauss
  from random import seed
  from pandas import Series
  from pandas.tools.plotting import autocorrelation_plot
  from matplotlib import pyplot
  # seed random number generator
  seed(1)
  # create white noise series
  series = [gauss(0.0, 1.0) for i in range(1000)]
  series = Series(series)
  # summary stats
  print(series)
  # line plot
  series.plot()
  pyplot.show()
  # histogram plot
  series.hist()
  pyplot.show()
  # autocorrelation
  autocorrelation_plot(series)
  pyplot.show()