All posts Which Test Do I Run? October 29, 2026 1 min read An interactive MA206 decision tree for choosing a hypothesis test, checking conditions, and working through examples. Tags Statistics Hypothesis-Testing MA206 Enable JavaScript to use the test chooser and examples. The decision tree below remains available as a reference. Which Test Do I Run?Courtesy of Nolan HedglinThe six tests on the reference card. One question at a time.Start at the top of the tree.zone not decided yetBackStart overWhat is the parameter: a proportion or a mean?A proportion, pppEach subject is a yes or a no. You count the yeses out of nnn.A mean, μ\muμEach subject gives a measurement. You average the measurements.z zonepnorm, qnormt zonept, qt, with dfz zone · pnorm, qnormt zone · pt, qt, with dfproportion pmean μonetwoonetwoyesnopairedindependentyesnoyesnoyesnoyesnoyesnoProportion or mean?How many samples?How many samples?σ known or n ≥ 40?Matched pairs?conditions?conditions?conditions?conditions?conditions?One-proportionz testLesson 23Two-proportionz testLesson 26One-samplez testLesson 21One-samplet testLesson 22Pairedt testLesson 25Two-samplet testLesson 24STOPSTOPSTOPSTOPSTOP Which Test Do I Run? — MA206 classroom.
