上次介绍和讨论了“四格表资料的 X~2检验”,是处理计数资料常用的方法,这次以及下次将介绍和讨论计量资料的常用处理方法,即 t 检验,这是1908年 W.S.Gosset氏首先提出的,当时他以“Student”为笔名发表,故至今有的书籍仍称之为“学生氏检验”,但如称为“学生检验”就不却当了。t 可能是 Last introduced and discussed the “X~2 test of the data on the four grids”, which is a commonly used method for processing count data. This time and the next time we will introduce and discuss the commonly used processing methods of measurement data, namely the t test, which was in 1908. WSGosset first put forward, when he was published under the pseudonym “Student”, so some books still called “Student’s test”, but if it is called “student test” is not it. t may be