For more information on the topics of this chapter, you can refer to the following links:
- Guide to using the merge function: https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.merge.html
- NOAA weather data: https://www.ncdc.noaa.gov/cdo-web/datatools/records
- SQL join types: https://www.w3schools.com/sql/sql_join.asp
- Data Literacy Project – understanding aggregations: http://qcc.qlik.com/mod/url/view.php?id=5268