NSG3029 CH1 (7) Questions and Answers/Rationale.

1. When subjects elect not to participate in a study and/or *— drop out of a study, this can lead to: A. Sampling error B. Sampling bias C. Selection bias D. Selection error ANS: C 2. The potential participants who meet the definition of the *— population and are accessible to the researcher is referred to as the: A. Population B. Sample C. Subjects D. Sampling frame ANS: D 3. The only way to be sure that a sample represents a population is if it incorporates the following two essential criteria: A. Random selection and independence B. Random selection and dependence C. Purposive selection and independence D. Purposive selection and dependence ANS: A 4. Selection bias may occur under all the following conditions except: A. Sample is not representative of the population