Question

The ability of an instrument to give the same output for repeated measurements under identical conditions is called:

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

Hint:

Logic Tip: A broken clock stuck at 12:00 is incredibly Precise (it always says 12:00 when you ask it), but it is only Accurate twice a day. Precision = Consistency. Accuracy = Correctness.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
In instrumentation and measurement, there is a distinct difference between "being correct" and "being consistent."
Step 2: Key Formula or Approach:

Accuracy: Closeness to the "true" value.
Precision: Repeatability and reproducibility of measurements.

Step 3: Detailed Explanation:
Precision refers to the degree of agreement between several individual measurements. If you measure the same object five times and get the exact same reading every time, the instrument is highly precise, even if that reading is wrong (which would be an accuracy issue).
Step 4: Final Answer:
The ability to give the same output repeatedly is called precision.