The Poka-Yoke Quiz
Test your knowledge of mistake-proofing

Click box below each question to see the answers. Keep track of how many you answer correctly and compare it to the grading scale at the bottom of the page.


1. Which of the following is not one of the inspection techniques identified by Shingo:
    A. Source
    B. Informative
    C. Statistical
    D. Judgment

2. Judgment Inspection:

    A. is a very effective inspection technique
    B. reduces defect rates dramatically
    C. used solely to discover defects after production
    D. should be used whenever possible

3. A setting function:

    A. is a very effective inspection technique
    B. signals that a defect has occurred
    C. keeps a machine from operating when defects are likely to be produced
    D. is the link between inspection and the regulatory function

4. A regulatory function:

    A. is the remedial action taken after a process goes out-of-control
    B. signals that a defect has occurred
    C. keeps a machine from operating when defects are likely to be produced
    D. B or C

5. Source Inspection:

    A. reduces defect rates dramatically
    B. used solely to sort out defects after production
    C. should be avoided
    D. both A & B

6. Which is not an informative inspection technique:

    A. statistical process control
    B. acceptance sampling
    C. successive-checks
    D. self-checks

7. The correct ranking of Shingo's inspection techniques (from best to worst) is:

    A. judgment, informative, source
    B. source, judgment, informative
    C. informative, source, judgment
    D. source, informative, judgment

8. Informative Inspection:

    A. inspects products to help control the process
    B. inspects process to help control the product
    C. keeps a machine from operating when defects are likely to be produced
    D. should be avoided

9. Poka-Yoke:

    A. replaces any quality system you are currently using
    B. can reduce or eliminate human error
    C. cannot be used to reduce process variance
    D. is only used for source inspection


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I hope you enjoyed and learned from this quiz. If you have comments or want to take exception to one of my answers please send me a note.