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.W. McQuinn, Dennis Zaritsky