ABSTRACT
The sample is the source from which data are drawn to answer the research questions to test any hypothesis that might be made. The sample consists of one or more cases. In most studies, the cases are made up of human beings referred to as subjects or, more currently, participants. In other studies, the cases might be inanimate objects from which researchers extract their data. Data were drawn from multiple sources and multiple participant samples. The following study exemplifies the use of the non proportional stratified sampling strategy. A strategy used to help manage very large populations is cluster sampling. Rather than trying to find a sample to represent some population as with representative sampling, purposeful sampling stresses strategies for selecting samples for in-depth data gathering. On the opposite side of maximum variation sampling is the homogeneous sampling strategy. The aim of this strategy is to select participants that share the same attributes.
