Jyacica

import numpy as np
import matplotlib.pyplot as plt
from sklearn.linear_model import LinearRegression
from sklearn.metrics import mean_squared_error, mean_absolute_error, r2_score
from sklearn.model_selection import train_test_split
import scipy.stats as stats  #导入stats库

# 1. 准备数据
AD_spend = np.array([10,15,20,25,30,35,40,45]).reshape(-1, 1)
Sales = np.array([120,150,180,210,240,270,300,330])