Combine the relative uncertainties of two variables as u_y/|y| = √(Σ(u_i/x_i)²) for a product or quotient model.
输入变量 x1、x2 及其标准不确定度 u1、u2,求相对合成不确定度。
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Product/quotient model | Relative RSS | GUM 1995 |
| Power model | Exponent weighting | GUM |
| Unit factors | Constants drop out | GUM |