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Which kind of inspection do you perform?
Destructive
39%
Non-destructive
26%
Both
34%
Total votes: 61
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The Perfect Companion to SQC Online
Practical Acceptance Sampling (2nd Edition) is a hands-on introduction to the inspection of products and services for quality assurance using statistically-based sampling plans.
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Methods are illustrated using SQC Online, Microsoft Excel, and online calculators.
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From the Glossary
The inspection level determines the relation between the batch size and sample size.
Levels I, II, and III are general inspection levels:
- Level II is designated as normal.
- Level I requires about half the amount of inspection as level II, and is used when reduced sampling cost are required and a lower level of discrimination (or power) can be tolerated.
- Level III requires about twice the amount of inspection as level II, and is used when more discrimination (or power) is needed.
The four special inspection levels S-1,S-2,S-3,S-4 use very small samples, and should be employed when small sample sizes are necessary, and when large sampling risks can be tolerated.