线性回归分析

    import pandas as pd
    
    import numpy as np
    
    import matplotlib.pyplot as plt
    
    from pandas import DataFrame, Series
    
    from sklearn.model_selection import train_test_split
    
    from sklearn.linear_model import LinearRegression
    
    # 读取文件
    
    datafile = u'C:\ Users\ ASUS\ Desktop\ dhdhdh.xlsx'  # 文件所在位置，u为防止路径中有中文名称，此处没有，可以省略
    
    data = pd.read_excel(datafile)  # datafile是excel文件，所以用read_excel,如果是csv文件则用read_csv
    
    examDf = DataFrame(data)
    
    examDf.head()
    
    # 绘制散点图,examDf.jt为