Which is the main reason that researchers use samples rather than populations?
It is difficult to develop eligibility criteria for populations.
Data from a sample are more accurate than data from a population.
It is more economical and efficient to work with samples.
Populations cannot be stratified and samples can.
The Correct Answer is C
A. Developing eligibility criteria for populations is not typically a reason for using samples instead of populations.
B. While data from a sample can sometimes be more manageable and easier to analyze, it's not accurate to say they are inherently more accurate than data from a population.
C. Working with samples is often more practical, economical, and efficient than attempting to gather data from an entire population, especially in large or geographically dispersed populations.
D. Populations can be stratified, but sampling allows researchers to select specific subgroups of interest from a population, making it easier to study specific characteristics or variables.
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Related Questions
Correct Answer is D
Explanation
A. This question focuses on the correlation between pet ownership and medication adherence, but it may not address significant nursing concerns or contribute significantly to nursing practice.
B. While this question addresses an aspect of medication adherence, it focuses on client behavior during vacation and may not be directly relevant to nursing practice or interventions.
C. This question focuses on client preferences for flavored syrups, which may be of interest but does not directly address medication adherence or nursing practice.
D. This question directly addresses medication adherence and nursing practice by assessing clients' ability to recall discharge medication instructions at a follow-up clinic visit, which is crucial for ensuring safe and effective medication management.
Correct Answer is B
Explanation
A. Seeking IRB approval during the time that study assumptions are being described may be premature, as the study methodology has not yet been finalized.
B. IRB approval should be sought before the study methodology is implemented to ensure that ethical standards are met and participant rights are protected throughout the research process.
C. Seeking IRB approval as soon as a list of potential research problems is identified may be premature, as the study design and methodology may still undergo revisions.
D. Waiting until just before the findings are disseminated to seek IRB approval is too late in the research process and may pose ethical concerns if participant rights were not adequately protected throughout the study.
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