
16 Nonparametric Statistics for Social and Behavioral Sciences
Learning about the population constitutes a study in itself, not to mention
the time and work involved in identifying all cases in a population. The list
of all cases from which a sample can be selected is called a sampling frame.
However, constructing a list of all cases in a given population such as indi-
viduals enrolled in higher education at any given time is next to impossible.
Therefore, nonprobability sampling procedures can be used to select a sample.
1.4.2 Nonprobability Samples
Nonprobability sampling makes no guarantee that the selected cases are rep-
resentative of the ta ...