Which term describes the ability to hit the same spot in repeated measurements?

Which term describes the ability to hit the same spot in repeated measurements?

• A. Precision
• B. Accuracy
• C. Imprecision
• D. Inaccuracy

Answer: (A)

Precision is about how consistently your measurements cluster when you repeat them. When you measure the same quantity multiple times and the values are very near each other, you’ve achieved high precision — you’re hitting the same spot each time. This can happen even if that spot isn’t at the true value, which shows why precision and accuracy are related but distinct: accuracy is about closeness to the true value, while precision is about repeatability. Imprecision and inaccuracy aren’t the standard terms used to describe repeatability in QC; they convey the idea of poor precision or bias, respectively, but the established concept for “hit the same spot in repeated measurements” is precision.

Precision is about how consistently your measurements cluster when you repeat them. When you measure the same quantity multiple times and the values are very near each other, you’ve achieved high precision — you’re hitting the same spot each time. This can happen even if that spot isn’t at the true value, which shows why precision and accuracy are related but distinct: accuracy is about closeness to the true value, while precision is about repeatability. Imprecision and inaccuracy aren’t the standard terms used to describe repeatability in QC; they convey the idea of poor precision or bias, respectively, but the established concept for “hit the same spot in repeated measurements” is precision.