For the 2001 entering class (from the MSAR):
mean GPA 3.67; mean MCAT 10.76; 53% women
The ranges, which might be somewhat more informative, are not given. Also take note: these stats are only for those students offered acceptances who chose to enter the first year class, NOT for all offered acceptances. Thus, there are always limits to the usefulness of such data. Moreover, we never know exactly why these students were offered places; there surely were students with equal or better records who never were even interviewed.
For all medical schools, these kind of stats have limited predictive value for individual applicants; they are at best what is colloquially known as a "ballpark" figure.
If you have an advisor who is knowledgeable about the past students from your college who earned interviews and acceptances, you may get a better estimate about where you might stand in the competition. The advisor will know more about the interviewees and acceptees than just their stats, which is what you also need to know.