統計量分析--極差、標準差、變異係數、四分位數間距

#-*- coding: utf-8 -*-
#餐飲銷量數據統計量分析
import pandas as pd

catering_sale = 'catering_sale.xls' #餐飲數據
data = pd.read_excel(catering_sale, index_col = '日期') #讀取數據，指定“日期”列爲索引列
data = data[(data['銷量'] > 400)&(data['銷量'] < 5000)] #過濾異常數據
statistics = data.describe() #保存基本統計量

statistics.loc['range'] = statistics.loc['max']-statistics.loc['min'] #極差
statistics.loc['var'] = statistics.loc['std']/statistics.loc['mean'] #變異係數
statistics.loc['dis'] = statistics.loc['75%']-statistics.loc['25%'] #四分位數間距

print(statistics)

結果：