FREE Certified Six Sigma Black Belt Measurement System Analysis (MSA) Questions and Answers Flashcards
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Read the first 6 FREE Certified Six Sigma Black Belt Measurement System Analysis (MSA) Questions and Answers flashcards as text
What does 'stability' refer to in the context of Measurement System Analysis?
Answer: The consistency of measurements from a gage over an extended time period
Stability measures whether a gage's performance remains consistent over time, typically assessed by periodically measuring a reference standard and plotting results on a control chart.
In a Gage R&R ANOVA method, what additional source of variation can be identified that the X-bar and R method cannot detect?
Answer: Operator-by-part interaction
The ANOVA method can decompose variation to identify the operator-by-part interaction effect, which the X-bar and R method cannot isolate.
A bias study reveals a statistically significant bias at the 0.05 significance level. What is the recommended first corrective action?
Answer: Recalibrate the measurement instrument
When statistically significant bias is detected, the first corrective action is to recalibrate the instrument to eliminate the systematic offset from the reference value.
What is the recommended minimum number of parts and trials for a standard crossed Gage R&R study?
Answer: 10 parts and 3 trials
The AIAG MSA manual recommends at least 10 parts measured 3 times each by each operator to provide sufficient data for reliable variance component estimation.
Which graphical tool is most commonly used to assess measurement system stability over time?
Answer: Control chart of repeated measurements on a reference standard
A control chart plotting repeated measurements of a master or reference standard over time is the standard tool for monitoring measurement system stability.
In MSA, what does the term 'resolution' or 'discrimination' of a measurement instrument refer to?
Answer: The smallest detectable difference the instrument can reliably measure
Resolution refers to the smallest increment of change that a measurement instrument can detect, which is fundamental to its ability to distinguish between parts.