The entire aggregation of cases in which a researcher is interested is called:

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

Explanation

The term 'population' refers to the entire aggregation of cases in which a researcher is interested.
It represents the complete set of people or entities to which the results of a research study are intended to be generalized.
For example, if a study focuses on Indian nurses with doctoral degrees, the population is all nurses in India who fit this criterion.
The question asks for the term describing the 'entire aggregation', which is the exact definition of a population in research.

Option B: 'Group' is a general, non-technical term. While a population is a group, 'population' is the specific, formal term in research for the entire set of interest.
Option C: 'Strata' are not the entire population but rather specific subgroups or layers created by the researcher for sampling purposes.
Option D: A 'sample' is a subset of the population that is actually selected and studied. It is not the entire aggregation of cases but only a representative part of it.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Definition of 'Population' in Research Methodology as background academic context rather than a clinical decision trigger.
Understanding research terms like 'population' is crucial for nurses to critically appraise research studies and determine if the findings are applicable to their own patient population (a concept known as generalisability).
When implementing evidence-based practice, a nurse must evaluate if the population described in a research article (e.g., 'post-operative cardiac patients in an urban hospital') is similar enough to the patients they care for.
What if? If a researcher was only interested in studying 'undergraduate nursing students in their final year in Delhi', that specific group would become the target population for their study, not all nursing students in India.

How to Approach the Question

This is a factual recall question testing knowledge of fundamental research terminology.
First, identify the key phrase in the question stem: 'the entire aggregation of cases'.
Analyze the meaning of this phrase. 'Entire aggregation' clearly points to the whole, complete set, not a part of it.
Evaluate each option based on this understanding.
A 'sample' is a subset, so it's incorrect. 'Strata' are subdivisions, also incorrect.
'Group' is a general term, whereas 'Population' is the specific, technical term used in research for the entire set of interest.

Concept Tested & Keywords

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E6 NursingResearch Polit 11e Part 1 p. 274-276

E6 NursingResearch Suresh Sharma 5e Part 1 p. 230-232

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.