t-distribution
A probability distribution used in statistics, especially for small sample sizes or when the population variance is unknown. Technical term in mathematics.
The t-distribution is often used in hypothesis testing when the population variance is unknown.
Kana spelling of the 't' symbol, sometimes used in textbooks or when the Latin character is unavailable.
The term is a direct borrowing from English 't-distribution', where 't' refers to the test statistic introduced by William Sealy Gosset under the pseudonym 'Student'. The Japanese form combines the Latin letter 't' with 分布 (distribution).