When these tests were developed they were administered to hundreds or thousands of people so that statistics are available to say how a person’s score compares to a sample of healthy persons of the same age.
Kui need katsed töötati need manustada sadu või tuhandeid inimesi, et on olemas statistilised andmed öelda, kuidas inimese skoor võrreldav proovi tervetel inimestel samas vanuses.