Cleaning the data

In the last section, we proposed ways that we could clean the data. In this section, we actually clean the data. Let's review where we are in the EDA (exploratory data analysis) process:

1. load all the data (and combine them if necessary)
2. inspect the data in preparation cleaning it
3. clean the data in preparation for analysis
4. add any interesting features or columns as far as they pertain to the analysis
5. find ways to analyze or summarize the data and report your findings