Question

Given below are two statements:
Statement I: Precision refers to the closeness of various measurements for the same quantity.
Statement II: Accuracy is the agreement of the obtained value with the known or true value of the quantity.
In light of the above statements, choose the correct answer from the options given below:

• A. Both Statement I and Statement II are correct
• B. Both Statement I and Statement II are NOT correct
• C. Statement I is correct, but Statement II is not correct
• D. Statement I is not correct, but Statement II is correct

Hint:

Precision is about consistency in repeated measurements, while accuracy is about correctness relative to the true value. A result can be precise without being accurate and vice versa.

Answer 1

The Correct Option is A

Step 1: Understand the definition of precision.
Precision refers to how close the repeated measurements of the same quantity are to each other, regardless of how close they are to the true value. It reflects the consistency or reproducibility of measurements.
Step 2: Understand the definition of accuracy.
Accuracy indicates how close a measured value is to the actual (true or accepted) value. It reflects the correctness of the measurement.
Step 3: Analyze Statement I.
Statement I says, "Precision refers to the closeness of various measurements for the same quantity." This is correct, as it matches the definition of precision.
Step 4: Analyze Statement II.
Statement II says, "Accuracy is the agreement of the obtained value with the known or true value of the quantity." This is also correct, as it aligns with the definition of accuracy.
Step 5: Conclusion.
Since both definitions are correct, both Statement I and Statement II are correct.