正态分布 import numpy as np import scipy.stats as stats #在scipy中把各种分布的函数拿到手 import matplotlib.pyplot as plt import matplotlib.style as style from IPython.core.display import HTML %matplotlib inline style.use('fivethirtyeight') plt.rcParams[figure.figsize] = (14,7) plt.figure(dpi=100) #单位面积像素多少 #PD