Menu
×
   ❮     
HTML CSS JAVASCRIPT SQL PYTHON JAVA PHP HOW TO W3.CSS C C++ C# BOOTSTRAP REACT MYSQL JQUERY EXCEL XML DJANGO NUMPY PANDAS NODEJS R TYPESCRIPT ANGULAR GIT POSTGRESQL MONGODB ASP AI GO KOTLIN SASS VUE DSA GEN AI SCIPY AWS CYBERSECURITY DATA SCIENCE
     ❯   

正态(高斯)分布


正态分布

正态分布是最重要的分布之一。

它也称为高斯分布,以德国数学家卡尔·弗里德里希·高斯命名。

它符合许多事件的概率分布,例如智商分数、心跳等。

使用 random.normal() 方法获取正态数据分布。

它有三个参数

loc - (均值)钟形曲线峰值所在的位置。

scale - (标准差)图形分布的平坦程度。

size - 返回数组的形状。

示例

生成大小为 2x3 的随机正态分布

from numpy import random

x = random.normal(size=(2, 3))

print(x)
自己试试 »

示例

生成大小为 2x3、均值为 1、标准差为 2 的随机正态分布

from numpy import random

x = random.normal(loc=1, scale=2, size=(2, 3))

print(x)
自己试试 »

正态分布的可视化

示例

from numpy import random
import matplotlib.pyplot as plt
import seaborn as sns

sns.distplot(random.normal(size=1000), hist=False)

plt.show()

结果

自己试试 »

注意:正态分布的曲线也称为钟形曲线,因为它的形状像一个钟。



×

Contact Sales

If you want to use W3Schools services as an educational institution, team or enterprise, send us an e-mail:
[email protected]

Report Error

If you want to report an error, or if you want to make a suggestion, send us an e-mail:
[email protected]

W3Schools is optimized for learning and training. Examples might be simplified to improve reading and learning. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. While using W3Schools, you agree to have read and accepted our terms of use, cookie and privacy policy.

Copyright 1999-2024 by Refsnes Data. All Rights Reserved. W3Schools is Powered by W3.CSS.