weight <- c(50,55,63,55,67,43,52)

high <- c(150,160,170,175,150,153,165)


plot(weight,high,
     pch=43,
     col="red",
     xlab="體重",
     ylab="身高",
     main="班級的身高體重")

library(ggplot2)

data <- data.frame(
  name=c("A","B","C","D","E") ,  
  value=c(3,12,5,18,45)
  )
ggplot(data, aes(x=name, y=value)) + 
  geom_bar(stat = "identity", width=0.2) 

data<- c(60,13,35,48)
labels <- c("英文系","法文系","德文","翻譯")

pie(data,labels,main ="學生的比例", col=heat.colors(length(data)))