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