Python统计模块用法示例

本文概述

mean()函数
median()函数
mode()函数
stdev()函数
mid_low()
mid_high()

【Python统计模块用法示例】Python统计信息模块提供了对数字数据进行数学统计的功能。在此模块中定义了一些流行的统计功能。
mean()函数mean()函数用于计算列表中数字的算术平均值。
例子

import statistics # list of positive integer numbers datasets = [5, 2, 7, 4, 2, 6, 8] x = statistics.mean(datasets) # Printing the mean print("Mean is :", x)

输出

Mean is : 4.857142857142857

median()函数median()函数用于返回列表中数字数据的中间值。
例子

import statistics datasets = [4, -5, 6, 6, 9, 4, 5, -2] # Printing median of the # random data-set print("Median of data-set is : % s " % (statistics.median(datasets)))

输出

Median of data-set is : 4.5

mode()函数mode()函数返回列表中最常见的数据。
例子

import statistics # declaring a simple data-set consisting of real valued positive integers. dataset =[2, 4, 7, 7, 2, 2, 3, 6, 6, 8] # Printing out the mode of given data-set print("Calculated Mode % s" % (statistics.mode(dataset)))

输出

Calculated Mode 2

stdev()函数stdev()函数用于计算给定样本的标准偏差, 该样本以列表的形式提供。
例子

import statistics # creating a simple data - set sample = [7, 8, 9, 10, 11] # Prints standard deviation print("Standard Deviation of sample is % s " % (statistics.stdev(sample)))

输出

Standard Deviation of sample is 1.5811388300841898

mid_low()mid_low函数用于返回列表中数字数据的低中位数。
例子

import statistics # simple list of a set of integers set1 = [4, 6, 2, 5, 7, 7] # Note: low median will always be a member of the data-set. # Print low median of the data-set print("Low median of data-set is % s " % (statistics.median_low(set1)))

输出

Low median of the data-set is 5

mid_high()mid_high函数用于返回列表中数字数据的高中位数。
例子

import statistics # list of set of the integers dataset = [2, 1, 7, 6, 1, 9] print("High median of data-set is %s " % (statistics.median_high(dataset)))

输出