The best I could do right now was use the more easily accessible films in the NC SF master list which are correlated to the old Top 25 poll. That's 77 films from the Top 25 list.
The missing films are all over the poll, as high as #8 (TOUCH OF EVIL) and #11 (THE BIG SLEEP) which haven't been shown at NC SF.
So you are looking at the Top 25 poll fanning out left-to-right, with noir-o-meter raw scores displayed on the vertical axis.
Sometime after the French book is done ("contained" is the firefighting analogy here...!) I hope to fully integrate all of these files, including the NC LA screening list and Elliot Lavine lists so that a more comprehensive look at these correlations can be made.
There is definitely some correlation here, but it's premature to formally calculate it, because so many other films are not represented. The other way to look at this is (as you noted) by the quality rankings of these films vis-a-vis the noir-o-meter scores; I will see if I can get that posted and linked a bit later.