python 中 sm.graphics.plot_regress_exog 绘制图像的解释

导入相关包import numpy as npimport pandas as pd import statsmodels.api as smimport matplotlib.pyplot as plt创建数据X = np.arange(1,20) # 创建X数据def fun(x,a,b): return a*x + by = fun(X,3,2) # 创建 y = 3*x+2np.random.seed(2) # 控制每次随机误差数据相同y_noise =np.rand