期中作業

Statistic <- c(68,85,74,88,63,78,90,80,58,63)

Math <- c(85,91,74,100,82,84,78,100,51,70)

plot(Statistic,Math,
     pch = 17,
     col= "lightgreen",
     main ="班上的統計成績與數學成績",
     xlab ="統計成績",
     ylab ="數學成績")

hist(Statistic,
     col= "lightblue",
     main ="班上的統計成績",
     xlab ="統計成績",
     ylab ="次數")

# Load ggplot2
library(ggplot2)
# Load ggplot2
library(ggplot2)

# Create data
data <- data.frame(
  社團類型=c("公益活動","科學創新","體育競技","知識閱讀","娛樂休閒") ,  
  人數=c(25,28,36,82,185)
  )

# Barplot
ggplot(data, aes(x=社團類型, y=人數)) + 
  geom_bar(stat = "identity", width=0.2,  fill="skyblue") 

data<- c(25,28,36,82,185)
labels <- c("公益活動","科學創新","體育競技","知識閱讀","娛樂休閒")

pie(data,labels,main ="社團比例", col=cm.colors(length(data)))

# Libraries
library(ggplot2)

# Create data
data <- data.frame(
  社團名稱=c("公益活動","科學創新","體育競技","知識閱讀","娛樂休閒"),
  人數=c(25,28,36,82,185)
)


ggplot(data, aes(x=社團名稱, y=人數)) +
  geom_segment( aes(x=社團名稱, xend=社團名稱, y=0, yend=人數), color="skyblue") +
  geom_point( color="blue", size=4, alpha=0.6) +
  theme_light() +
  coord_flip() +
  theme(
    panel.grid.major.y = element_blank(),
    panel.border = element_blank(),
    axis.ticks.y = element_blank()
  )

getwd()

## [1] "C:/Users/wenzao/Desktop"

data <- read.csv("table1_1.csv")
stem(data$Japanese)

## 
##   The decimal point is 1 digit(s) to the right of the |
## 
##   4 | 9
##   5 | 139
##   6 | 13
##   7 | 9
##   8 | 49
##   9 | 1

mean(data$Japanese) #平均數

## [1] 67.9