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Sign in to follow the course Academy › Measure › Applied assessment Applied assessment · Module 3
Applied assessment — baselining and measurement systems Judge whether a measurement system is trustworthy, calculate DPMO and capability from factory data, and decide what the evidence-based baseline should be.
Every question asks you to decide, judge or calculate from a situation rather than recall a definition. 5 questions, 75 per cent to pass, as many attempts as you like, and your best score is kept on this device. Free, and a self-study assessment rather than an accredited examination.
4 of 5 needed to pass
1. A quality inspector checks the same 10 garments twice, an hour apart, and gets a different pass/fail verdict on 4 of the 10 garments. What does this most directly indicate? Choose one answer.
The defect rate has genuinely worsened between the two checks The garments themselves are inconsistent between the two checks The inspector's repeatability is poor — the measurement system, not necessarily the product, may be adding variation to the data The sample size of 10 is too small to matter
2. Across one week, an inspection line checked 5,000 garments, each assessed against 8 defect opportunities (e.g., seam, button, hem). 60 total defects were found. What is the DPMO? Choose one answer.
12,000 DPMO 1,500 DPMO 60,000 DPMO 480,000 DPMO
3. A trouser inseam specification is 76 cm +/- 1.0 cm (so 75.0 to 77.0 cm). Process data give a mean of 76.4 cm and a standard deviation of 0.30 cm. Using Cpk = min[(USL - mean)/(3s), (mean - LSL)/(3s)], what is Cpk, and what does it tell the team? Choose one answer.
Cpk = 0.67 (using the upper side, the tighter side), showing the process is not very capable and is shifted toward the USL Cpk = 1.11, calculated by simply averaging the two one-sided indices Cpk cannot be calculated without first running a hypothesis test Cpk = 1.56 (using the upper side), showing the process is safely centered and capable
4. A team wants a data-collection plan for buttonhole defects but has not yet written an operational definition of 'defective buttonhole.' Two inspectors are already recording data. What is the most likely consequence, and what should the team do? Choose one answer.
The team should discard all statistics work and rely only on the merchandiser's opinion The team should let each inspector keep their own definition, since averaging their results cancels out the difference No consequence — buttonhole defects are obvious to any inspector, so a definition is unnecessary Inspectors will likely apply different personal judgment thresholds, making the data inconsistent; the team should pause and agree a written, verifiable operational definition before continuing
5. A team is setting the project's evidence-based goal after baselining. Current sigma level is 2.8 (about 80,000 DPMO) and the customer is threatening to walk at anything above 15,000 DPMO. Which goal statement best reflects Measure-phase discipline? Choose one answer.
'Keep the DPMO exactly the same but document it more professionally.' 'Achieve Six Sigma (3.4 DPMO) by next month.' 'Reduce DPMO from about 80,000 to at or below 15,000 within an agreed project timeframe, tied to identified root causes still to be confirmed in Analyze.' 'Try to do better than before.'
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