What is another term for cluster sampling?

Appeared in: DSSSB 13 August 2024

Explanation

Cluster sampling is a probability sampling method where the population is divided into separate groups called clusters.
A random sample of these clusters is then selected from the population.
The process often involves sampling at various levels or stages, for example, selecting districts, then villages, then households.
Because this selection occurs in successive stages, it is also referred to as multistage sampling.

Option A: Convenience sampling is a non-probability technique where the sample is chosen based on ease of access, not a random process involving clusters.
Option B: Quota sampling is a non-probability method where the researcher selects a sample that reflects the numerical composition of various subgroups in the population, but not through random cluster selection.
Option D: Snowball sampling is a non-probability technique used to find and recruit subjects from hidden or hard-to-reach populations through referrals.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Sampling Methods in Research as background academic context rather than a clinical decision trigger.
Understanding sampling methods is crucial for nurses to critically appraise research evidence. The method used affects how much you can trust the results and apply them to your patients (generalizability).
Probability sampling methods like cluster/multistage sampling are stronger than non-probability methods because they reduce selection bias, leading to more reliable findings.
What if? If a study on a new diabetes management app used only convenience sampling from a single urban hospital, a nurse in a rural clinic should be cautious. The results might not apply to their patient population, who may have different access to technology and healthcare resources.

How to Approach the Question

First, identify the core concept in the question, which is 'cluster sampling'.
This is a factual recall question that asks for an alternative name or synonym.
Recall the definition of cluster sampling: dividing a population into groups (clusters) and then sampling those groups.
Consider how this process works in practice. It's often done in several steps or stages (e.g., states, then cities, then neighborhoods). This directly links it to the term 'multistage sampling'.
Evaluate the other options to confirm they are distinct concepts. Convenience, quota, and snowball sampling are all non-probability methods, which is a key difference from the probability-based cluster sampling.

Concept Tested & Keywords

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E6 NursingResearch Suresh Sharma 5e Part 1 pp. 246-248, 245-247

E6 NursingResearch Sukhpal Kaur p. 260-262

Practise the full DSSSB 13 August 2024

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