ST is strength, and it measures "Physical power and bulk"
DX is dexterity, and it measures "Agility, Coordination, and mind motor control"
IQ is intelligence, and it measures "Brain power, including creativity, intuition, memory, perception, reason and will power.."
HT is health, and it measures "Energy and vitality"
The normal default for humans is ten.
“She'd become a governess. It was one of the few jobs a known lady could do. And she'd taken to it well. She'd sworn that if she did indeed ever find herself dancing on rooftops with chimney sweeps she'd beat herself to death with her own umbrella.”
― Hogfather