Statistics & Data Science · Experimental Design
A topic within Experimental Design, itself one of 9 topics in that field and part of Statistics & Data Science.
2 works
Abraham Wald
Derives the sequential probability ratio test, showing that letting sample size depend on the data collected so far reaches a decision with fewer observations on average than any fixed-size test of the same reliability.
link checked 17 Sept 2026Herbert Robbins
Poses the multi-armed bandit problem formally and shows the sequential-design question is not just when to stop but which arm to pull next, founding adaptive experimentation as a distinct topic from fixed sequential testing.
link checked 17 Sept 2026