>>> import numpy as np
>>> import pandas as pd
>>> from sklearn import linear_model
>>> from sklearn import model_selection
>>> from sklearn import metrics
>>> from sklearn import preprocessing
>>> from matplotlib import pyplot as plt

# adv.csv 파일은 매체별 비용과 매출액에 대한 데이터다

# 데이터 읽기
>>> df_adv = pd.read_csv('c:/adv.csv', index_col=0)
>>> print(df_adv.shape)
(200, 4)

# 플롯 그리기
>>> plt.scatter(df_adv.TV, df_adv.sales)
>>> plt.title('Scatter Plot')
>>> plt.xlabel('TV')
>>> plt.ylabel('sales')
>>> plt.show()