Python Scipy scipy.stats.norm object is used to analyze the normal distribution and calculate its different distribution function values using the different methods available. Syntax of scipy.stats.norm() to Calculate Binomial Distribution: Based on different methods used, some common optimal parameters are shown below: scipy.stats.norm.method(x, loc, scale, size, moments) Methods Available in scipy.stats.norm() Object norm.pdf() Returns n dimensional array. It is the probability density function calculated at x. norm.cdf() Returns cumulative probability for every value of x.