5 Getting started
5.1 Download the data
For your convenience, all data in this book, including data from prior exams and sample solutions, has been put into a library called ExamPAData by the author. To access, simplly run the below lines of code to download this data.
# Install remotes if it's not yet installed
# install.packages("remotes")
remotes::install_github("sdcastillo/ExamPAData")Once this has run, you can access the data using library(ExamPAData). To check that this is installed correctly see if the insurance data set has loaded. If this returns “object not found”, then the library was not installed.
## district group age holders
## Min. :1.00 Length:64 Length:64 Min. : 3.00
## 1st Qu.:1.75 Class :character Class :character 1st Qu.: 46.75
## Median :2.50 Mode :character Mode :character Median : 136.00
## Mean :2.50 Mean : 364.98
## 3rd Qu.:3.25 3rd Qu.: 327.50
## Max. :4.00 Max. :3582.00
## claims
## Min. : 0.00
## 1st Qu.: 9.50
## Median : 22.00
## Mean : 49.23
## 3rd Qu.: 55.50
## Max. :400.005.2 Download ISLR
This book references the publically-avialable textbook “An Introduction to Statistical Learning”, which can be downloaded for free
http://faculty.marshall.usc.edu/gareth-james/ISL/
If you already have R and Rstudio installed then skip to “Download the data”.
5.3 New users
Install R:
This is the engine that runs the code. https://cran.r-project.org/mirrors.html
Install RStudio
This is the tool that helps you to write the code. Just as MS Word creates documents, RStudio creates R scripts and other documents. Download RStudio Desktop (the free edition) and choose a place on your computer to install it.
https://rstudio.com/products/rstudio/download/
Set the R library
R code is organized into libraries. You want to use the exact same code that will be on the Prometric Computers. This requires installing older versions of libraries. Change your R library to the one which was included within the SOA’s modules.