$4.$ You will work with the passenger Titanic data found on this $[$link$]().$

i$)$ Read this data directly from the web using its URL.

ii$)$ Read this data by saving it first into your working directory. Check your working directory using $`$getwd$()`$ or change its location using the steps covered in the lesson.

iii$)$ How many passengers and what variables are in the data set?

iv$)$ Display the first $5$ rows of the data.