Meanings
nounGrubbs' test (plural Grubbs' tests)
plural Grubbs' tests
- mathematicsA statistical test for deciding whether a data point is an outlier.
Origin
Named after Frank E. Grubbs, who published the test in 1950.
Full word history & related roots →Cite this entry
APA
Grubbs' test. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Grubbs'%20test
MLA
“Grubbs' test.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Grubbs'%20test. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “Grubbs' test,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Grubbs'%20test.
Source: Grubbs' test on Wiktionary, CC BY-SA 4.0.