Selection bias
Distortion arising because the sample was not drawn at random. The index's largest unmeasured confounder: lots that get tested are lots someone chose to test.
Related terms
- Survivorship
- A related bias: the material that reaches a laboratory is not representative of material that does not. Compounded here by who chooses to submit and when.
see also Selection bias
Where this term appears
The glossary exists to make record pages readable without a chemistry degree. Every technical term on a report resolves here.
- Assay report records — the term appears in result tables, peak tables and provenance blocks
- Method references — where the measurement behind the term is defined
- All 21 glossary terms beginning with S