These stats are to help players understand the differences between each race in terms of physical capabilities. These stats are representative of each race under the assumption that they are healthy and in good physical condition. A Human can be considered the average and a good base to compare other races to. Each number can be considered that race's physical limit in that field, meaning they cannot get past that limit without the help of some sort of exterior power such as a disease, curse, or condition like lycanthropy, vampirisim, or goulification. Enchanted or magical items that would increase it, or special herbs or performance enhancing drugs, may also be applied in this respect.
While each race may not be able to exceed their physical limit natrually, they can drop below it simply from being sick, out of shape, injured, or from some sort of other condition that could hinder them physically. Just because a race has a higher ranking in a physical field does not mean they will always beat other races in that field. IC training and experience plays a big role in what people can and can't do.
The stats for each race can be found on their respective race pages.