HOW MANY TOP 60 OPPONENTS SHOULD WE SCHEDULE, FOR NCAA TOURNAMENT PURPOSES? POST-2017 UPDATE

Last year, I published information on the number of Top 60 opponents that the NCAA Tournament #1, #2, #3, and #4 seeds played and that the unseeded teams that did and did not get at large selections played.  That information was based on 10 years' data, from 2007 through 2016.  I've added the data from the 2017 season, so here is a table with updated numbers:

And below are charts showing a little more detail (but not the Average and Median numbers) for the #1, #2, #3, and #4 seeds and for the unseeded teams that did (yes) and did not (no) get at large selections: