How would a nurse researcher ensure that the sample used in a research study is homogeneous?
A) Restrict eligibility criteria to limit extraneous variables relevant to the study.
B) Randomly assign subjects to either the experimental or the control group.
C) Assign one research assistant to collect all data.
D) Collect all data at the same time of day.

Question

Quizplus · Accepted Answer

Correct A: Homogeneity of a sample is ensured by restricting eligibility criteria.
Incorrect B: Random assignment to experimental or control groups does not ensure homogeneity.
Incorrect C: Data collection by one researcher will not control extraneous variables in a sample.
Incorrect D: Timing of data collection will not ensure a homogenous sample.

How Would a Nurse Researcher Ensure That the Sample Used