Answers are grounded in this paper and cite their sources.
B. L. Welch, The Specification of Rules for Rejecting Too Variable a Product, with Particular Reference to an Electric Lamp Problem, Supplement to the Journal of the Royal Statistical Society, Vol. 3, No. 1 (1936), pp. 29-48
No takes yet. Share an insight, caveat, or question.
B. L. Welch (1936) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: