How many push-ups can you do?

I have read on a few sources that average person is supposed to be able to do 20-30 push-ups.

But I find it weird, I have started working out recently and can do 6 barely, my friends can do 12, 8, and 1. The girls from my work can do 1 or 0.

That doesn't come close to 20-30 average. So am I just living amongst very weak people in work and in private?

I am not asking here to see what average Joes and Joannes can do.

Slight edit: Of course I'm taking proper form chest to ground push-ups. I know some people do 90 degree elbows but I can do like 25 of those so nah.