标准差计算器
求一组数字的平均数、方差和标准差。
在您的浏览器中运行。您的文件不会离开设备。 了解如何验证
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使用方法
- 1填写各项
输入数字或选择所需选项。
- 2查看结果
更改任何值时，答案会立即更新。
- 3使用结果
复制结果或记下来。不会向任何地方发送任何内容。
About this tool
Paste or type numbers separated by commas, spaces or new lines. You get the count, sum, mean, median, minimum, maximum, range, variance and both the population and sample standard deviation. Use the sample value when your numbers are a sample of a larger group.
When to use it
Get the mean, variance and standard deviation of a list of numbers.
Tips
Use sample when your data is a sample. Use population when it is everything.
Privacy
Everything runs in your browser, so your data is not uploaded or stored.
计算示例
With the boxes at their starting values (Numbers: 4, 8, 6, 5, 3, 9, 7), the tool shows: Count: 7; Sum: 42.0000; Mean: 6.0000; Median: 6.0000; Smallest: 3.0000; Largest: 9.0000; Range: 6.0000; Population variance: 4.0000. Change any box to see your own numbers. The result updates as you type, and nothing leaves your browser.
获得最佳结果的提示
在相信结果之前先检查每一个输入项，因为一个错误的数字就会改变整个答案。请使用工资单、账单、证书或合同上的准确数字，并记下计算日期。税率、门槛和规则会不时变化，因此对于税费和法律事务，请将结果视为估算，并与本页注明的官方来源核对。您可以尝试任意多个方案；不会保存或发送任何内容，刷新页面会清空输入。
要点
- 分类: 日常工具
- 在浏览器中运行，无需注册，无需上传。
- 您输入的信息保留在设备上。
- 提供多种语言。
- 内容最后审核日期:
常见问题
Population or sample?
Use population when you have every value in the group. Use sample when the numbers are only part of a bigger group.
What does standard deviation tell me?
How spread out the numbers are around the mean. A small value means they are close together.
Sample or population?
Sample divides by n minus 1. Population divides by n.
What does it show?
How spread out the numbers are.