Ameasure of the size of an effect in a population is called

A measure of the size of an effect in a population is called EFFECT SIZE.
The principle of effect size is used in statistical study of data obtained in experimental research. In research studies which compare different interventions, effect size refers to the magnitude of the difference between population groups that are been considered.

Ifound this on google “according to the findings, a foramen magnum positioned toward the base of the skull is found not only in humans, but in other habitually bipedal mammals as well.” i hope this you for what your looking for