3 import matplotlib.pyplot 
as plt
 
    5 import matplotlib.mlab 
as mlab
 
   10     print(
"plot_gaussian.py mean variance")
 
   12 mean = float(sys.argv[1])
 
   13 variance = float(sys.argv[2])
 
   14 sigma = math.sqrt(variance)
 
   15 x = np.linspace(-3*sigma+mean,3*sigma+mean,100)
 
   16 plt.plot(x,mlab.normpdf(x,mean,sigma))