Exam 12: Sampling

At a teaching hospital,of the staff of 1,500 nurses,60% have a college diploma,and 21% have a BScN.The recruitment goal for a study was set at 1,000 nurses,with 600 in the college diploma group,210 in the BScN group,and 190 from any other type of nursing education.What type of sampling strategy is represented by this research plan?

Which of the following statements best identifies the sample descriptors that form the basis for eligibility criteria in sample selection?

How are population and sample different?

Which of the following is the process of selecting representative units of a population for a research investigation?

How do researchers use the technique of power analysis?

Which of the following processes or characteristics restricts the population to homogeneous groups of subjects?

What process is employed when a researcher accrues a sample of participants by using the word-of-mouth approach?

What type of sampling strategy is represented when every fourth postsecondary student who registers for a specific course is selected into the treatment group?

Why should a researcher avoid drawing conclusions or making generalizations based on the experiences of a small number of participants?

What is the appropriate sampling interval for drawing a systematic sample of 25 subjects from 200 women who had breast enhancement surgery in the course of a particular year at a specific medical centre?

Which of the following sampling strategies has the greatest risk for sample bias?

What is the major benefit of nonprobability sampling,as compared with probability sampling?

A study was conducted to determine whether head flattening in preterm infants was prevented by placing their heads on a water pillow.The first 50 preterm infants admitted to a newborn intensive care unit during a specific year were assigned to either a usual care group or a treatment group.What type of sampling strategy is represented by this research plan?

What does the technique of matching in a sampling strategy contribute to the research?

Which factor or condition of a sample meets the criterion for representativeness?

What is the difference between an "accessible population" and a "target population"?

Which of the following statements about inclusion and exclusion criteria is true?

What is the major characteristic of a stratified sample?

What is the primary characteristic of a probability sample?

What question should a research consumer ask when evaluating the sample size in a research report?