title: “titanic Surve or Die?” output: html_document —
pie(table(ti$survival))
#乘客人數
people=length(ti$gender)
cat("總人數:",people,"\n")
## 總人數: 2208
#存活率
sur_rate=sum(ti$survival)/people
cat("總存活率: ",sur_rate)
## 總存活率: 0.2613225
gender=table(ti$gender)
pie(gender)
gender <- table(ti$gender,ti$survival)
print(gender)
##
## 0 1
## 0 1468 258
## 1 163 319
barplot(gender)
bad_ag=tabulate(match(ti$age,9999),1)
bad_fa=tabulate(match(ti$fare,9999),1)
bad=bad_ag+bad_fa
cat("存在雜訊9999共",bad ,"個","\n")
## 存在雜訊9999共 36 個
cat("於age 區:",bad_ag,"個","\n")
## 於age 區: 10 個
cat("於fare區:",bad_fa,"個")
## 於fare區: 26 個