Answer:
well it would kinda depend on their age,and size,but the average height of an ADULT male is : 5.6 ft
ADULT female:5.2ft
(remember it would depend on their age,but some people might even have medical reasons to be shorter or taller than their original height too. At a age children don't HAVE to be that exact height,but atleast close enough to that height.)
(changes may occur depending on medical reasons,or age too!)