TitanicRevisit

titanic.df <-read.csv(paste("Titanic Data.csv", sep = ""))
View(titanic.df)

aggregate(Age~Survived, data = titanic.df, mean)

##   Survived      Age
## 1        0 30.41530
## 2        1 28.42382

people who survived mean age is 28.42

people who died mean age is 30.41

t.test(Age~Survived, data = titanic.df)

## 
##  Welch Two Sample t-test
## 
## data:  Age by Survived
## t = 2.1816, df = 667.56, p-value = 0.02949
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  0.1990628 3.7838912
## sample estimates:
## mean in group 0 mean in group 1 
##        30.41530        28.42382