A patient satisfaction survey was conducted at Family Practice A. The average rating of online telemedicine visits was 4.5 out of 5, while in-person visits received a 3.0 out of 5.
Which samples should be used to compare the ratings?
A.
Total Family Practice A visits and in-person visits
B.
Total Family Practice A visits and online telemedicine visits
C.
Online ratings of other family practices and online ratings for all Family Practice A visits
D.
Online Family Practice A telemedicine visits and in-person Family Practice A visits
To make a valid comparison in data-driven decision making, samples must be comparable and drawn from the same population, differing only in the factor being evaluated. In this case, the goal is to compare patient satisfaction between online telemedicine visits and in-person visits at Family Practice A.
Using online Family Practice A telemedicine visits and in-person Family Practice A visits ensures that both samples come from the same organization, patient base, and survey methodology. This controls for external factors such as practice standards, demographics, and survey design, allowing differences in ratings to be attributed to the visit type rather than unrelated variables.
Comparing total visits to only one visit type introduces imbalance. Including other family practices introduces external variation and invalidates the comparison. Data-driven decision making stresses consistency and relevance in sample selection to ensure accurate conclusions.
Therefore, the correct answer is D, as it uses comparable samples that isolate the variable of interest.
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