Stats? that should be interesting. I'm on the older side, and had a rough start to college, eventually leaving my first school with a remarkably bad GPA after 2 years. I did bounce back and graduated from a state school with highest honors. Overall my GPA was about a 3.2 (over 160+ credit hours - I took my time and changed majors as well as colleges several times). I also have an MBA from a top 10 school, and had a 3.6 in that. But I haven't been inside a classroom in over 20 years.
My GRE's are a little more current : 167 verbal, 161 quant, 5.0 on the written.
Overall if anything made me a strong candidate, it's my experience. I've lived all over, including in Quito, Warsaw and Tel Aviv, and have been involved in projects in dozens more countries. My kids were born overseas, and I have seen firsthand the medical facilities available to different classes of people in some of these countries. I think I was able to put together a pretty strong application out of that. Plus I had 3 really good LORs - 2 Ivy League professors (one who taught me during my MBA, and another who was my boss for several years but then returned to academia) and my current boss. And some experience supporting medical researchers.
I honestly think that for a professional degree like an MPH, GRE's and undergrad GPAs are probably a gatekeeper - having low scores on either might keep you out. But what gets you in is probably your experience, your referrals and how well you are able to communicate how all that relates to what the program has to offer.
Good luck!
JB