Kaggle has a tutorial competition on the survival of the passengers of the Titanic. Datacamp has a handy tutorial on using R to tackle the problem. Here are ...
Lists allows us to keep a collection of various objects together
Vectors and matrices are designed to hold single types. When we need to mix data types in a tabular form we can use a data frame.
Factors are like vectors but with values classed into levels. When vectors have a limited number of repeated values they fit the bill.
Adding Captions to matrices make them more readable and allows us to retain information when we subset the matrix.