RMP.5:5.5 - Repeated measurements and an uncertain contrast

A constructed experiment has eight independent specimens, each measured three times under a supplied measurement Method. The analysis must retain specimens as the relevant independent units; twenty-four readings are not twenty-four independent specimens.

Suppose the qualified analysis yields a contrast estimate of two scale units with an uncertainty interval from minus one to five. Report the estimate, interval, units, comparison and assumptions. On these stipulated results alone, neither “no effect” nor “a practically sufficient effect” follows. A receiving threshold or an equivalence claim requires its own supplied criterion and interpretation. The useful result is the bounded estimate and what it leaves unresolved.