A researcher wants to include every fifth patient listed on a clinic register, but the register has a repeating pattern in which every fifth entry comes from the same village. What is the main concern?
Correct answer: A. The sample may have selection bias
- A. The sample may have selection bias
- B. The sample must be purposive
- C. The data will lack reliability
- D. The study has low face validity
Explanation
A repeating pattern in the list can make systematic sampling unrepresentative and introduce selection bias. Purposive sampling is a deliberate qualitative method, while reliability and face validity concern measurement rather than selection.
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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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