Bias
Definition
An estimate of systematic difference relative to an appropriate reference.
Related terms
- Expanded Uncertainty
- The combined standard uncertainty multiplied by a coverage factor k, chosen to achieve a stated coverage probability. For a normal distribution, k...
- Precision
- The degree to which repeated measurements of the same specimen under the same conditions agree with each other. Quantified by the standard...
- Proficiency Testing
- An external quality assurance programme in which a laboratory analyses blind samples distributed by an independent provider and submits results for comparison...
- Standard Uncertainty
- Measurement uncertainty expressed as a standard deviation.
- Validation
- The process of establishing through systematic testing that a method does what it claims to do, within defined conditions and with a...
- Verification
- Confirmation that a method's performance, when implemented locally, meets the validated specifications. Less work than validation; required when a lab adopts a...