A hospital study divides nurses into medical, surgical, and paediatric groups, then randomly selects participants from each group. Which sampling method is being used?
Correct answer: B. Stratified random sampling
- A. Convenience sampling
- B. Stratified random sampling
- C. Systematic random sampling
- D. Snowball sampling
Explanation
Stratified random sampling separates the population into important subgroups and randomly selects participants from each subgroup. Systematic sampling selects every fixed interval from one list, while convenience sampling uses whoever is readily available.
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Nursing research covers problem identification, literature review, research questions, hypotheses, variables, quantitative and qualitative approaches, study designs, sampling and data collection. It also addresses validity, reliability, research ethics, data interpretation and evidence-based practice, including how research findings can guide nursing decisions and care.
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