IGNOU PB. Bsc. Nsg. Entrance-2025
Nursing Research & Statistics
Easy
All of the following are types of non-probability sampling EXCEPT:
Appeared in: IGNOU PB. Bsc. Nsg. Entrance-2025
Explanation
- Simple random sampling is a type of probability sampling, not non-probability sampling.
- In probability sampling, every member of the population has a known, non-zero chance of being selected, which is typically achieved through a random selection process.
- Simple random sampling ensures that each individual has an equal and independent chance of being included in the sample, which minimizes selection bias.
- The question asks for the method that is an exception to non-probability sampling, making simple random sampling the correct choice.
Why Other Options Were Wrong
- Option A: Purposive sampling is a classic example of a non-probability sampling method.
- Option B: Convenience sampling is a non-probability technique defined by its non-random selection based on ease of access.
- Option D: Quota sampling is a non-probability method. Although it aims for proportionality similar to stratified sampling, the final selection of participants within each quota is non-random (usually by convenience).
Related Visual
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Classification of research sampling methods (Probability vs. Non-Probability) as background academic context rather than a clinical decision trigger.
- Nurses must be able to critique research articles to engage in evidence-based practice. Understanding the sampling method is crucial for evaluating the quality and generalizability of research findings.
- A study using non-probability sampling may have limited external validity, meaning its findings cannot be confidently applied to a broader patient population. Nurses need to recognize this limitation when considering changes to clinical practice based on such research.
- What if? If a nurse is reading a study about a new wound care technique tested on a convenience sample of patients from a single hospital, the nurse should be cautious about applying the results to their own diverse patient population, as the sample may not be representative.
How to Approach the Question
- First, identify the core concept in the question stem, which is 'non-probability sampling'.
- Next, notice the critical keyword 'EXCEPT'. This signals that you must find the option that does NOT belong to the category of non-probability sampling.
- Review each option and classify it as either a probability or non-probability technique.
- Recall that 'Purposive', 'Convenience', and 'Quota' sampling all involve non-random selection based on judgment, accessibility, or quotas.
- Recognize that 'Simple random sampling' is the definition of a basic probability method, where every individual has an equal chance of selection.
- Therefore, simple random sampling is the exception and the correct answer.
Concept Tested & Keywords
- Concept Tested: Classification of research sampling methods (Probability vs. Non-Probability)
- Stem keywords: non-probability sampling, sampling, types
- Lead-in keywords: EXCEPT
- Negative lead-in flag: Question asks for the exception
Question ID
QSmbtFbip9fL6w566LIyWg
Reference Book
E6 NursingResearch Suresh Sharma 5e Part 1 pp. 242-244, 245-247
E6 NursingResearch Sukhpal Kaur p. 260-262
Practise the full IGNOU PB. Bsc. Nsg. Entrance-2025
Attempt every question from this paper in a timed mock, then review the full solution for each one.
More Population, Sample & Sampling Questions
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