Sinking of the Titanic dataset

Creating the dataframe titanic with the csv file into it and viewing it.

setwd("C:/Users/Kalyan/Downloads")
titanic.df<-read.csv(paste("Titanic Data.csv",sep = ""))
View(titanic.df)

A table showing the average age of the survivors and the average age of the people who died.

table1<-aggregate(Age~Survived,data=titanic.df,mean)
table1
##   Survived      Age
## 1        0 30.41530
## 2        1 28.42382

A t-test to test the following hypothesis:

H2: The Titanic survivors were younger than the passengers who died.

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

Since the p value is 0.02949 (p<0.05) we can reject the null hypothesis and say that there is a significant difference in age of survivors and those who died.The survivors were younger than the passengers who died.