Below are some thoughts about the visualizations in this report and some suggestions for improvement, and notes when things are done well. You should implement these in milestone4
[x] THANK YOU (!!) for having a table at the beginning that has a human-readable version of the column/feature names
[x] Great job formatting all x-axis labels with thousands separator and putting your categorical variables on the y-axes
[x] It would really help if you had a caption and a figure/table number for each plot. That way you can easily reference it in your text, and it's easier for readers to find
[ ] Figure 1:
[ ] Good stuff putting the categorical value on the y-axis
[ ] Looks great over all!
[ ] Figure 2:
[ ] Consider putting Figure 1 and Figure 2 (map) side-by-side since they are very related
[ ] Figure 3:
[ ] Nice! This is a very powerful visualization that shows the reader exactly what you want to show
[ ] Ideally, you only want to show half the correlation map as the other half is redundant (see example here) - let me know if you figure out how to do this in Altair
[ ] Tables
[ ] Too many sig figs, there's no need to show that many, it hurts readability and interpretability
[ ] Overall the report visualizations are pretty polished, but could use some work with sizing and formatting. Great work! Excellent work with your labels, titles, and plot choices! For every plot I was immediately able to understand what you were trying to convey.