(ran dəm): Being or relating to a set or to an element of a set each of whose elements has equal probability of occurrence; having a definite and especially an equal probability of occurring.

(sam pəl): A small subset group, representative of the entire group.

(sō shǝl sī ǝn tist): A scientist who studies the institutions and functioning of human society and with the interpersonal relationships of individuals as members of society.

(sǝr vā): A questioning or canvassing of persons selected at random or by quota to obtain information or opinions to be analyzed.