A lot of real data isn’t very tidy, mostly because most scientists aren’t taught about how to structure their data in a way that is easy to analyze.
Download an untidy version of some of the Portal Project data, which includes information on the data, species identification, weight and sampling plot for some small mammals.
Convert the data into a more tidy format. While completing this exercise think about how much time it took you to complete and how you monitored your edits for mistakes.