- August 20, 2026Multivariate analysis of variance compares crossed factors: each setting of one factor is paired with each setting of the other factor.…
- August 18, 2026Sequential bifurcation / dichotomous plans. When faced with a defect that has many possible causes, we cannot afford to…
- August 11, 2026
- August 11, 2026When one assembly works and another doesn't, this method identifies which component is causing the difference: we swap the components…
- August 11, 2026*Best of the Best vs. Worst of the Worst. Rather than evaluating the entire body of work, we focus on the few best pieces…
- August 11, 2026Power is the probability of detecting a difference that actually exists. Its complement is beta risk: failing to detect a…
- August 11, 2026This page runs tests without the raw data. You enter the summary statistics directly. It is used in three specific cases: one…
- August 11, 20261. Choosing a Test: Ellistat presents the tests in a two-column matrix: the family of online tests, the…
- August 11, 2026Every test compares two hypotheses: The test calculates the p-value—the probability of observing a difference at least as large as…
- August 11, 2026The "Inferential Statistics" menu in ELLISTAT contains six items, but not all of them are equally suitable for the same purpose. This…