Wald’s sequential analysis technique
Win-Vector Blog 2015-12-22
Microsoft Revolution Analytics has just posted our latest article on A/B testing: Wald’s graphical sequential inspection procedure. It is a fun appreciation of a really cool procedure and I hope you check it out.
Figure 14, Section 6.4.2, page 111, Abraham Wald, Sequential Analysis, Dover 2004 (reprinting a 1947 edition).