Data from an experiment to assess the impact of three different teaching methods on language ability. 30 students were randomly allocated into three groups, one for each method. The students' IQ before instruction and a language test score after instruction were recorded.
从实验数据来评估三种不同的教学方法,语言表达能力强的影响。 30名学生被随机分为三组,一组为每个方法。学生的IQ前指令后,指令和语言测试成绩的记录。
用法----------Usage----------
data (teach.df)
格式----------Format----------
A data frame with 30 observations on 3 variables.
30个观察3个变量的数据框。