Une Raison pour ne pas Abandonner les Tests de Signification de l'Hypothèse Nulle.
Abstract
It is shown that an interval estimate for a contrast between means can be straight-
forwardly computed, given only the observed contrast and the associated t or F test
statistic (or equivalently the corresponding p-value). This interval can be seen as a fre-
quentist con¯dence interval, as a standard Bayesian credibility interval, or as a ¯ducial
interval.
This gives Null Hypothesis Signi¯cance Tests (NHST) users the possibility of an easy
transition towards more appropriate statistical practices. Conceptual links between NHST
and interval estimates are outlined.