ASQ ASQ Certified Calibration Technician (CCT) 3

Question 1

'Bias' in a measurement system is defined as:

Accepted Answer

The systematic difference between the average of multiple measurements and the true reference value

Answer

Bias (systematic error or offset) is the consistent, predictable difference between the average measured value and the true value, correctable by adjustment.

Question 2

In measurement system management, 'stability' refers to:

Accepted Answer

The change in bias of a measurement system over time when measuring the same reference part

Answer

Measurement system stability tracks how the bias changes over time — a stable system shows no significant drift when repeatedly measuring the same reference part.

Question 3

What does 'as-found' vs. 'as-left' mean in calibration records?

Accepted Answer

As-found is the condition of the instrument when received for calibration; as-left is the condition after calibration and any adjustments

Answer

As-found documents the instrument's accuracy before any adjustments during calibration, while as-left documents its accuracy after all calibration adjustments are made.

Question 4

'Linearity' in a measurement instrument refers to:

Accepted Answer

The consistency of bias across the instrument's full operating range

Answer

Linearity assesses whether the bias of a measurement system remains constant across its full measurement range, or whether it varies at different points.

Question 5

The '10:1 rule' in calibration refers to:

Accepted Answer

The ratio between the accuracy of the calibration standard and the accuracy of the instrument being calibrated

Answer

The 10:1 rule states that the calibration standard should be at least 10 times more accurate than the instrument being calibrated to minimize calibration uncertainty.

ASQ - American Society for Quality Certification Practice Test

ASQ - American Society for Quality Certification Practice Test

ASQ ASQ Certified Calibration Technician (CCT) 3