The deviation of the measured value from the actual value regardless of the operator is known as ______________.

Question

Options

• ALinearity
• BBias
• CRepeatability
• DMovement

• A
  3% (1)
• B
  79% (27)
• C
  12% (4)
• D
  6% (2)

Explanation

Bias is the correct answer because it specifically refers to the systematic difference between the average of measured values and the true (reference) value - and critically, this error persists regardless of who performs the measurement, making it an equipment or calibration issue rather than a human one.

• Linearity (A) is the change in bias across the measuring range of the instrument - it describes how bias varies, not a single fixed deviation.
• Repeatability (C) is the variation seen when one operator measures the same part multiple times under the same conditions - it is operator- and condition-dependent, the opposite of what the question describes.
• Movement (D) is not a standard measurement system analysis (MSA) term and does not describe any established accuracy or precision metric.

Memory tip: Think of Bias as a Bullseye problem - your shots consistently land in the wrong spot no matter who is shooting, because the sight is off, not the shooter.

No community discussion yet for this question.