cinny

age <- c(50,55,63,55,67,43,52)
high <- c(150,160,170,175,150,153,165)

mean(age) #年齡的平均數

## [1] 55

Q1 <- quantile(age, 1 / 4) 
Q2 <- quantile(age, 2 / 4) 

median(age) 

## [1] 55

Q1

## 25% 
##  51

Q2

## 50% 
##  55

plot(age,high)

plot(age,
     pch=17,
     col="orange",
     xlab="人數",
     ylab="年齡",
     main="班上的年齡與身高")

hist(age,
     col= "lightyellow",
     main ="班上的年齡與身高",
     xlab ="年齡",
     ylab ="人數")

library(ggplot2)

# Create data
data <- data.frame(
  type=c("高端","默德納","AZ") ,  
  value=c(3,12,7)
  )

# Barplot
ggplot(data, aes(x=type, y=value)) + 
  geom_bar(stat = "identity", width=0.2,  fill="skyblue") 

data<- c(50,23,35,48)
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)))