Control module quiz

Knowledge check

Pick one answer per question. Explanations appear after you submit.

1. 1. Specifications are not control limits because:

   • They are wider
   • Spec is customer requirement; control limits are statistical voice of process
   • They are narrower
   • They are the same

2. 2. Proportion defective with varying sample sizes uses:

   • c-chart
   • p-chart
   • X-bar/R
   • Individuals

3. 3. Count of defects per constant unit uses:

   • p-chart
   • c-chart
   • X-bar/R
   • np-chart

4. 4. Reacting to every common-cause point is:

   • Reaction plan
   • Tampering that increases variation
   • SPC
   • Standard

5. 5. A control plan without an owner is:

   • Fine
   • Not a control plan — ownership is required
   • Optional
   • Sponsored by QC

6. 6. Training attendance ≠ competence because:

   • Attendance is faked
   • Sitting through content does not prove ability to perform the task
   • Trainers are unreliable
   • Records are wrong

7. 7. Repeat MSA after improvement should be triggered by:

   • Nothing
   • New equipment, operator, material or scale change
   • Only management demand
   • 5-year interval

8. 8. Two sewing shifts each run the same operation their own way and both meet the hourly target. Why is this still a control weakness?

   • It is not a weakness while the target is met
   • Without one timed standard method there is no stable baseline, so variation and any later improvement cannot be attributed
   • Because supervisors dislike differences between shifts
   • Because the buyer requires identical shifts by contract

9. 9. Financial benefits claimed by two owners is:

   • Fine
   • Double counting — allocate once
   • Standard
   • Small issue

10. 10. The best control choice for a critical CTQ is usually:

    • Detection
    • Prevention (poka-yoke, robust design)
    • Escalation
    • Sampling only