When a sample is tested repeatedly, the precision of the test is related to which concept?

• A. Reproducible
• B. Accuracy
• C. Sensitivity
• D. Specificity

Answer: (A)

Precision is about how tightly repeated measurements agree with each other. When you test the same sample several times and get results that are very close, the test is reproducible, which is another way of saying it has high precision. If the results vary a lot between repeats, precision is low even if each individual measurement seems reasonable. Accuracy differs because it worries about how close the average result is to the true value, not about how consistent the results are across repeats. Sensitivity and specificity relate to detecting true positives and true negatives, not to repeatability. So, repeated testing showing consistent results best reflects reproducibility, i.e., high precision.