Dataset: https://new.mta.info/agency/new-york-city-transit/subway-bus-ridership-2020
This dataset had data relating to ridership on trains, buses and highways. I used the data from the columns for the date, the Subway: Total Estimated Ridership, Subway: % of Comparable Pre-Pandemic Day and Bridges and Tunnels: % of Comparable Pre-Pandemic Day.
Technique: I used the libraries pandas, numpy and pandasql to first clean the data. I then used df.plot.scatter() to make a scatter plot to see the relation between date and subway ridership.