Liberty University, Psychology 255: Introduction to Research questions with correct answers

haphazard (convenience) sampling Answer selecting subjects on the basis of availability, and not with regard to having a representative sample of the population; nonprobability purposive sampling Answer a sample conducted to obtain predetermined types of individuals, nonprobability quota sampling Answer when the sample is chosen to reflect the numerical composition of various subgroups in the population; nonprobability stratified random sampling Answer a method in which a population is divided into subpopulation groups called strata, then individuals are randomly sampled from each of the strata; probability simple random sampling Answer a procedure in which each member of the population has an equal chance of being included in the sample; probability cluster sampling Answer a method in which existing groups or geographic areas are identified, then each group is randomly sampled and those selected participate in the study test-retest reliability Answer a coefficient determined by the correlation between scores on a measure given at one time with scores on the same measure given at a later time