The difference between a measurement reading and the actual dimension is called?

The difference between a measurement reading and the actual dimension is called?

• A. Accuracy
• B. Precision
• C. Error
• D. Uncertainty

Answer: (A)

The difference between what you measure and the true size is the measurement error. It’s the actual deviation you see when you compare the reading to the real dimension. If the true dimension is 50.000 mm and you read 50.125 mm, the error is +0.125 mm. Accuracy is about how close readings are to the true value on average, reflecting bias and overall correctness of the measurement process. Precision is about how consistent repeated measurements are with each other, regardless of how close they are to the true value. Uncertainty is the doubt or range you assign to how true the measured value is, given the measurement method. So the single difference you observe is the error, while accuracy, precision, and uncertainty describe the quality and reliability of measurements more broadly.

The difference between what you measure and the true size is the measurement error. It’s the actual deviation you see when you compare the reading to the real dimension. If the true dimension is 50.000 mm and you read 50.125 mm, the error is +0.125 mm.

Accuracy is about how close readings are to the true value on average, reflecting bias and overall correctness of the measurement process. Precision is about how consistent repeated measurements are with each other, regardless of how close they are to the true value. Uncertainty is the doubt or range you assign to how true the measured value is, given the measurement method. So the single difference you observe is the error, while accuracy, precision, and uncertainty describe the quality and reliability of measurements more broadly.