3 Summary

This week you’ve learned how to take a dataset that contains multiple possible groupings, or subsets of data, and work with those groups to perform a variety of transformations. You’ve explored:

• ways of grouping dataways of grouping data
• Comtrade dataComtrade data
• the world of export datathe world of export data
• how to get data.how to get data.

Next week looks at how to split the data contained in a dataframe into multiple groups based on the unique ‘key’ values in a single column, or unique combinations of values that appear across two or more columns.