Proper set up for homework

In order to correctly load in the datasets required for the homework assignments, we recommend you save all homework assignments in a single folder. Let's say you call this folder "R-for-epi". Then in the "R-for-epi" folder, create a subfolder called "data", and within that folder create two subfolders called "Surfer-data" and "washb-data". Save the datasets provided in the zip files for the homework assignments in those subfolders. Here is an example of how the folder structure looks: