def pdf(x, mu, sigma):
 return ((1 / (sigma * sy.sqrt((2 * sy.pi)))) * sy.exp(((- ((x - mu) ** 2)) / (2 * (sigma ** 2)))))

def pdf ( x , mu , sigma ) : return ( ( 1 / ( sigma * sy . sqrt ( ( 2 * sy . pi ) ) ) ) * sy . exp ( ( ( - ( ( x - mu ) ** 2 ) ) / ( 2 * ( sigma ** 2 ) ) ) ) )
probability density function computing p input is the mean .