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---
id: 5e46f7e5ac417301a38fb928
title: 均值-方差-标准差 计算器
challengeType: 10
forumTopicId: 462366
dashedName: mean-variance-standard-deviation-calculator
---
# --description--
创建一个函数,这个函数可以使用 Numpy 输出 3 x 3 矩阵的每一行、每一列和所有元素的均值,方差和标准差。
你可以在 [Replit](https://replit.com/github/freeCodeCamp/boilerplate-mean-variance-standard-deviation-calculator) 上查看整个项目的具体描述和初始代码。
点击此链接fork 这个项目。 当你根据 “README.md” 中的说明完成了项目,请在下方提交你的项目链接。
我们仍在开发 Python 数据分析课程的交互式教学。 现在,您将需要使用其他资源来学习如何通过这一挑战。
# --hints--
它应该通过所有的 Python 测试。
```js
```
# --solutions--
```py
# Python challenges don't need solutions,
# because they would need to be tested against a full working project.
# Please check our contributing guidelines to learn more.
```