Two laboratories, two percentages: are they measuring the same thing? · RESEARCH-21002

Correction note for “Two laboratories, two percentages: are they measuring the same thing?”: retain the wording beginning “Do not subtract the two percentages as though they represented…” in the record. If later material changes it, add the date, the changed wording and the source for that change; do not invent a completed correction here. Keep the stated question separate from any broader claim.

Limit of the answer in “Two laboratories, two percentages: are they measuring the same thing?”: “Do not subtract the two percentages as though they represented…” is an excerpt from the discussion, not an independent verification. A reader needs the relevant original material before treating an interpretation as established. Review focus: scope. Keep the stated question separate from any broader claim.

Summary draft for “Two laboratories, two percentages: are they measuring the same thing?”: the answer addresses “Do not subtract the two percentages as though they represented…”; the related point is “Before comparing laboratories, ask whether sample handling, method conditions…”. Keep both connected to the opening question, and mark any conclusion needing further records as unresolved. Review focus: scope. Keep the stated question separate from any broader claim.