MongoDB's Aggregation Framework is a powerful tool for analytics. This repo contains sample data, and examples from talks at MongoDB SV and Webinars.
Note! Original data-set and samples credit: https://github.com/jayrunkel/mongoDBAggWebFeb2015
To load the censusDB.tar.gz sample data:
$tar xvf censusDB.tar.gz
$mongoimport -d censusDB data
https://www.mongodb.com/presentations/webinar-exploring-aggregation-framework