If this tool helped you, you can buy us a coffee ☕
输入数据计算变异系数,评估相对离散程度。
Separate numbers with spaces, commas, semicolons, or new lines. Please enter at least two numerical values.
Please enter at least two valid numbers to calculate the Coefficient of Variation.

Inverse Trigonometric Function Calculator
Accurately calculate radian values for inverse trig functions like arcsin and arccos. Supports 6 function types and custom decimal precision.

Trigonometry Calculator
Calculate six trigonometric functions from radian values with custom decimal precision.

Least Common Multiple (LCM) Calculator
Quickly calculate the least common multiple (LCM) of two or more integers. Supports space-separated number list input.

Prime and Composite Number Calculator
Instantly identify prime, composite, or special numbers. Supports batch checking and mathematical property analysis.

Inverse Trigonometric Function Calculator
Accurately calculate radian values for inverse trig functions like arcsin and arccos. Supports 6 function types and custom decimal precision.

Trigonometry Calculator
Calculate six trigonometric functions from radian values with custom decimal precision.

Least Common Multiple (LCM) Calculator
Quickly calculate the least common multiple (LCM) of two or more integers. Supports space-separated number list input.

Prime and Composite Number Calculator
Instantly identify prime, composite, or special numbers. Supports batch checking and mathematical property analysis.

Circle Area Calculator
Quickly calculate the area of a circle by entering the radius, diameter, or circumference. Supports custom units and precision settings.
在比较不同单位或不同均值的多组数据波动大小时,仅看标准差往往难以客观判断。变异系数计算器通过您输入的一组数值,自动计算其平均值、标准差,并输出变异系数(CV = 标准差 / 平均值 × 100%),衡量数据的相对离散程度。变异系数消除了量纲和均值差异的影响,广泛用于金融风险度量、医学检验结果对比、工业质量控制等领域。
请确保至少输入两个数值,否则无法计算标准差。所有数值应为实数,工具会自动忽略空白和非数字字符。变异系数在均值接近零时变得极不稳定,此时结果参考价值有限,可考虑使用其他离散度指标。本工具为纯前端计算,您输入的数据不会上传服务器,保护隐私安全。
变异系数适用于比较不同组别或不同量纲数据的相对波动性。例如在金融中,比较股票A(均价50元,标准差5元)和股票B(均价200元,标准差10元):股票A的CV=10%,股票B的CV=5%,说明股票A的相对风险更高。在质量控制中,当测量指标均值差异较大时,CV可统一衡量批次稳定性。典型输入示例:小鼠体重数据:20.5, 22.1, 19.8, 21.3, 20.9 — 可快速得到CV≈4.0%。建议报告CV时同时附上样本量和均值,以便全面解读。