A statement of the expected relationship between two or more variables is known as?

JSSH Staff Nurse - 2019

Nursing Research & Statistics

Easy

Appeared in: JSSH Staff Nurse - 2019

Explanation

A hypothesis is defined as a tentative, testable statement that predicts a potential relationship between two or more variables.
It serves to translate a general research problem or question into a clear, declarative prediction of the expected outcome.
This prediction guides the entire research process, from study design and data collection to statistical analysis.
For example, a research question might be "Does smoking affect lung health?" while the hypothesis would be a specific prediction like "Smoking increases the risk of developing lung cancer.".

Option A: A problem statement identifies the gap in knowledge or the issue that needs to be investigated. It describes the 'why' of the study but does not propose a specific, testable relationship.
Option C: A conceptual definition provides the theoretical meaning of a concept. It explains what a variable means in an abstract sense, not how it relates to other variables.
Option D: A research question is an interrogative statement that the study aims to answer. A hypothesis is the declarative statement that proposes a potential answer to that question.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Definition of Hypothesis in Research Methodology as background academic context rather than a clinical decision trigger.
Understanding the term 'hypothesis' is fundamental for nurses to engage in evidence-based practice (EBP). It allows them to critically appraise research articles and determine the validity of the findings before applying them to patient care.
A nurse reading a study on a new wound care dressing must be able to identify the hypothesis to understand what the researchers were trying to prove and whether the results support that claim.
What if a statement reads, 'This study aims to explore the lived experiences of novice nurses during their first year of practice'? This is not a hypothesis. It is a research aim, typical of qualitative studies, which do not start with a formal hypothesis but rather generate themes or hypotheses from the data collected.

How to Approach the Question

First, analyze the keywords in the question stem: 'statement', 'expected relationship', and 'variables'.
This question is asking for a specific term from research methodology.
Evaluate each option based on its definition in the context of research.
A 'problem statement' identifies a problem. A 'research question' asks a question. A 'conceptual definition' defines a concept.
A 'hypothesis' is the only term that specifically refers to a predictive statement about the relationship between variables.
Therefore, select the option that matches this definition.

Concept Tested & Keywords

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E6 NursingResearch Sukhpal Kaur pp. 108-110, 112-114

E6 NursingResearch Suresh Sharma 5e Part 1 p. 97-99