Student's t distribution

== English == === Alternative forms === Student's t-distribution === Etymology === From the pen-name of Irish statistician William Sealy Gosset, which he used for a 1908 paper in Biometrika, under the pseudonym Student. The distribution was popularised through the work of Ronald Fisher, who referred to it as Student's distribution and used the letter t to represent the test value. === Noun === Student's t distribution (plural Student's t distributions) (statistics) A distribution that arises when the population standard deviation is unknown and has to be estimated from the data. ==== Usage notes ==== Sometimes referred to as Student's t distribution (a noun phrase with Student's used as determiner). The isolated letter t is often italicised. ==== Synonyms ==== (statistics): Student's t, t distribution ==== Coordinate terms ==== ==== Related terms ==== Student's t test ==== Translations ====