我试图画一个散点图,显示每个学生在每个问题上获得的分数百分比,并计算出全班的平均分数。
maxmarks.paper <- c(4,5,2,4,3,4,5,4,6,3,3,5,3,4,4,4,3,3,2,5,4)
results.student1 <- c(4,3,2,3,3,4,5,4,3,3,0,0,2,4,1,1,2,0,1,0,0)
results.student2 <- c(2,2,0,4,1,1,0,1,4,2,0,0,1,0,0,2,0,0,1,1,0)
#etc.
percentage1 <- results.student1 / maxmarks.