How typical are the local group dwarf galaxies?

Daniel R. Weisz, Andrew E. Dolphin, Julianne J. Dalcanton, Evan D Skillman, Jon Holtzman, Benjamin F. Williams, Karoline M. Gilbert, Anil C. Seth, Andrew Cole, Stephanie M. Gogarten, Keith Rosema, Igor D. Karachentsev, Kristen B McQuinn, Dennis Zaritsky