demo/cs11.r

data (course.df)
stripchart(Exam~Attend,pch=1,method="stack", ylab="regularly attend",xlab="exam mark",main="Exam by Attend",data=course.df)
summaryStats(Exam~Attend,data=course.df)
exam.fit<-lm(Exam~Attend,data=course.df)
eovcheck(exam.fit)
normcheck(exam.fit)
t.test(Exam~Attend,var.equal=T,data=course.df)

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s20x documentation built on Aug. 21, 2023, 5:07 p.m.