Python으로 그래프 작성(산포도)

import pandas as pd
import matplotlib.pyplot as plt
from pandas.plotting import scatter_matrix

data = pd.read_csv("row_data.csv")
data.describe()

plt.scatter(data['age'], data['expenses'])
plt.ylabel('expenses')
plt.xlabel('age')
plt.show()

plt.scatter(data['smoker'], data['expenses'])
plt.ylabel('expenses')
plt.xlabel('smoke')
plt.show()

plt.scatter(data['bmi'], data['expenses'])
plt.ylabel('expenses')
plt.xlabel('bmi')
plt.show()

plt.figure()
scatter_matrix(data)
plt.show()