Coming back to R after closing, a session can be restored by simply running R in the workspace directory.

A history file can be specified via:

RData can also be saved and loaded via:

Describing data:

Subsets of data is a logical next step:

Grouping data is also fairly intuitive:

Using histograms to plot variable distributions:

Lets look at some more ways to understand the data set:

Extending visualizations:

Analysis of categories can be conducted with frequency tables:

Finally lets have a look at some bivatiate (pairwise) correlations. If ther is no missing data, cor function can be users, else use can remove items: