Which among the following is a type of Non-probability sampling?

Appeared in: AIIMS Raipur NO - 2019 (Shift-1)

Explanation

Purposive sampling is a non-probability sampling technique because it does not involve random selection.
In this method, the researcher uses their expert judgment to select participants who are most suitable for the study's specific purpose.
Participants are chosen 'on purpose' because they possess particular characteristics of interest to the researcher, not by chance.
This method is common in qualitative research where the goal is to gain in-depth understanding from a specific group, rather than to generalize findings to a whole population.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Classification of Sampling Methods (Probability vs. Non-Probability) as background academic context rather than a clinical decision trigger.
Understanding sampling methods is crucial for nurses to critically appraise research studies and determine the credibility and generalizability of findings.
When reading a study, a nurse must identify the sampling method to judge whether the results can be safely applied to their own patient population (evidence-based practice).
For example, findings from a study using purposive sampling on a very specific patient group may not be applicable to the general patient population.

How to Approach the Question

First, identify the key concept in the question, which is 'Non-probability sampling'.
Define 'Non-probability sampling' in your mind: a method where selection is not random, and not everyone has a chance to be included.
Evaluate each option against this definition.
Option A (Systematic), B (Stratified), and D (Multistage) all involve a form of random selection, which makes them probability methods.
Option C (Purposive) involves deliberate selection based on judgment, which fits the definition of non-probability sampling. Therefore, it is the correct answer.

Concept Tested & Keywords

Concept Tested: Classification of Sampling Methods (Probability vs. Non-Probability)
Stem keywords: Non-probability sampling, sampling
Lead-in keywords: Which among the following
Negative lead-in flag: false

QuNb4i6klzc-Pd7hufRMJX

E6 NursingResearch Suresh Sharma 5e Part 1 pp. 242-244, 239-241, 234-236

Practise the full AIIMS Raipur NO - 2019 (Shift-1)

Attempt every question from this paper in a timed mock, then review the full solution for each one.