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The cumulative distribution function (CDF) of Gaussian distribution with standard deviation (sig) and mean (cen) in python Ref:  https://www.mathworks.com/help/matlab/ref/erf.html https://introcs.cs.princeton.edu/java/11gaussian/ =============================================== python code: ================================================ from scipy import special import matplotlib.pyplot as plt import numpy as np def erfValue(x, cen, sig):     #           1                 x - cen     # erf(x) = --- (1 + erf(-----------------))     #           2             sqrt(2) * sig     return 0.5*(1+special.erf((x-cen)/(np.sqrt(2)*sig))) def erfcValue(x, cen, sig):     return 1-erfValue(x, cen, sig) cen = 9.54 sig=2 xx = np.arange(0,20,step=.01) erf = erfValue(xx, cen, sig) plt.figure() plt.plot(xx,erf,'r'...