📊 五数概括5-Number Summary Calculator

使用说明与常见问题How-to & FAQ

「五数概括」是什么？What is the 5-Number Summary Calculator tool?

Min / Q1 / 中位数 / Q3 / Max。Min / Q1 / median / Q3 / Max.

如何使用「五数概括」？How do I use the 5-Number Summary Calculator tool?

在「五数概括」中，填写上方字段等参数，结果会随输入实时计算并显示在下方。In the 5-Number Summary Calculator: Fill in the fields above; results are recalculated instantly as you type.

四分位数用什么方法？Which quartile method is used?

先排序，再用线性插值求 Q1、中位数和 Q3，与 Excel 的 QUARTILE.INC 和 NumPy 默认方法一致。按中位数分半的教材方法在小样本时结果可能略有不同。The data is sorted and Q1, the median and Q3 are found by linear interpolation, matching Excel QUARTILE.INC and the NumPy default. Textbook methods that split the data around the median can differ slightly for small samples.

计算精度如何？How precise are the results?

「五数概括」使用 JavaScript 双精度浮点数（约 15–16 位有效数字）；极大或极小的数值可能存在精度误差。The 5-Number Summary Calculator uses double-precision floating point (about 15–16 significant digits); very large or very small values may lose precision.

「五数概括」免费吗？需要注册吗？Is the 5-Number Summary Calculator free? Do I need an account?

「五数概括」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The 5-Number Summary Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.