# -*- coding: utf-8 -*-
"""
Created on Wed Jun 19 14:59:32 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
moisture=pd.read_csv(u'data\\ch6\moisture.csv',encoding = "gbk")
print(moisture.head())
'''
alternative:備擇假設符號
下面運行結果,第一個值爲根據樣本數據計算的Z統計量,第二個值爲該統計量對應的P值
'''
print(sm.stats.DescrStatsW(moisture['moisture']).ztest_mean(value=4,
alternative='larger'))
運行:
(-0.440385831166995, 0.6701711574008213)