Provide a detailed explanation of your data sources

The data section should be 300-800 (roughly) words of text, as well as at least one properly formatted table of summary statistics, and preferably a number of charts and graphs that explore key relationships in your data.
The data section should:
Provide a detailed explanation of your data sources
Highlight important features of the data
Document key relationships in your data
Describe any data manipulations you might have made