Compute expanded uncertainty U = k × u_c from combined standard uncertainty and coverage factor, giving the confidence interval of a measurement result.
U = 包含因子 k × 合成不确定度。
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Expanded uncertainty | U = k·u_c | GUM 1995 |
| Coverage factor | k = t_p(νeff) | GUM |
| Reporting | y ± U format | JJF 1059.1 |
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