  I estimate MOND M/L values for nine galaxy groups that were recently studied
by Tully et al.. Instead of the large M/L values that they find with Newtonian
dynamics (up to 1200 solar units) the MOND estimates cluster around 1 solar
unit. Tully et al. find a systematic and significant difference between the M/L
values of groups that do not contain luminous galaxies and those that do:
Dwarfs-only groups have larger M/L values (by a factor of about 5). The MOND
M/L values do not show this trend; the Newtonian disparity is traced back to
the dwarfs-only groups having systematically smaller intrinsic accelerations
(similar sizes, but rather smaller velocity dispersions).
