Which parameter indicates how close a measured value is to the true value?

Which parameter indicates how close a measured value is to the true value?

• A. Accuracy
• B. Precision
• C. Ruggedness
• D. Linearity

Answer: (A)

Closeness to the true value is described by accuracy. Accuracy tells you how close a measurement, on average, is to the actual value you’re aiming for, often judged against a known standard or reference. Precision, in contrast, is about how consistently you can reproduce measurements—their spread—regardless of whether they hit the true value. Ruggedness refers to how well an instrument performs under changing conditions, and linearity describes how proportional the output is across the measurement range. So the parameter that indicates how close a measured value is to the true value is accuracy.

Closeness to the true value is described by accuracy. Accuracy tells you how close a measurement, on average, is to the actual value you’re aiming for, often judged against a known standard or reference. Precision, in contrast, is about how consistently you can reproduce measurements—their spread—regardless of whether they hit the true value. Ruggedness refers to how well an instrument performs under changing conditions, and linearity describes how proportional the output is across the measurement range. So the parameter that indicates how close a measured value is to the true value is accuracy.