Historical clue formulations

• Statistics tool used to find significant differences — 2026-04-05
• Statistical tool for checking a hypothesis — 2019-11-03
• Statistician's tool — 2016-08-26
• Statistical tool for comparing means — 2016-07-24
• Statistical method for comparing the means of two groups — 2014-10-18
• Statistics method for checking means — 2012-04-22