titanic=read.csv('Titanic Data.csv')
  aggregate( Age~Survived , data=titanic , FUN = mean )
##   Survived      Age
## 1        0 30.41530
## 2        1 28.42382
  t.test( Age~Survived , data = titanic)
## 
##  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