import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
df=pd.read_csv("C:/ames.csv")
P=df['SalePrice']

np.random.seed(123)
sample_mean50=[]
for j in range(5001):
    k= P.sample(n=50)
    x=np.mean(k)
    sample_mean50.append(x.sample_mean50())

plt.hist(sample_mean50)
plt.show()

표본추출 한 번 할때는 괜찮은데, 횟수를 반복하니 'float' object has no attribute 'sample_mean50' 라는 오류가 나타나네요 ㅠㅠ 어떻게 해결할 수 있을까요?