python筆記：6.2.2.2總體比例假設檢驗（例6-6產品合格率）

 

# -*- coding: utf-8 -*-
"""
Created on Thu Jun 20 16:42:20 2019

@author: User
"""

# 《Python數據分析基礎》中國統計出版社

#import numpy as np
from scipy import stats
import pandas as pd
import statsmodels.api as sm

mobile = pd.read_csv(u'data\\ch6\mobile.csv',encoding = "gbk")
print(mobile.head())

#print(stats.binom_test(95,100,p=0.97,alternative='greater'))

print("\n 單側P值")
print(sm.stats.binom_test(95,100,prop=0.97,alternative='larger'))

print("\n 正態檢驗P值")
print(sm.stats.proportions_ztest(95,100,value=0.97,alternative='larger'))

運行：

 單側P值
0.9191628710986264

 正態檢驗P值
(-0.9176629354822475, 0.8206023210565294)