I was curious about this and wanted to put this apparent offensive slump into perspective.
ISU's ADJOE on Torvik was 115.1 after @Houston, good for 33rd nationally
Now it's 114.8, not a huge drop, but now it's 52nd in the country.
The difference is that a lot of teams ranked 20-50 in the metric have been improving, I'd guess. Also, there's just not a lot of variance between teams 20-50.
Right now, the difference between 52) Iowa St and 20) Tennessee is the same as 5) Baylor to 1) Purdue
Purdue (128.6) - Baylor (124.7) = 3.9 difference
Tennesse (118.7) - Iowa State ( 114.8) = 3.9 difference
If it was still 115.1, we'd be ranked only 49th. So the drop the last 3 games wasn' tbad.
Do you happen to know what it was prior to Houston?