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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. While interviewing clients might provide some insights, it may not be the most efficient method for identifying previous research studies.
B. Reviewing research abstracts allows the nurse to quickly scan multiple studies and identify those that are most relevant to the topic of interest.
C. While input from orthopedic surgeons could be valuable, it may not provide information specifically about previous research studies on client teaching effectiveness.
D. Reading full-text articles can be time-consuming and may not be necessary initially.
Reviewing research abstracts provides a concise summary of relevant studies.
Correct Answer is C
Explanation
A. This statement is incorrect because a p-value less than .05 typically indicates statistical significance in nursing research.
B. This statement is incorrect because it misinterprets the meaning of p < .05. It does not mean that there is a 1-in-5 chance of the result occurring by chance alone.
C. A p-value less than .05 indicates that there is less than a 5% chance that the observed result occurred due to random chance. Therefore, the researcher can be 95% confident that the result did not happen randomly.
D. This statement is incorrect because it misinterprets the meaning of p < .05. It does not mean that only 5 out of 100 nursing research studies would report this result as significant.
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