Just like during the last practical, we will start by opening a new R-script (select from the top-menu in RStudio: File/New/R Script) and exploring the dataset.

Execute the following command in R to load the titanic dataset:

source('http://horizon.science.uva.nl/public/VVA/titanic_passenger.r')

If everything went well, an object titanic should have been loaded in the global environment.

Explore the dataset using the following you learned in practical 1 (e.g. summary(), str(), head(), class(), dim(), names()). This should become standard practice when you get a new dataset.

How many observations does the dataset contain?