This is the third and last video about the ANSI tables (also known as “AQL tables”).
As I explained in the last video, these sampling schemes were designed for very stable relationships, where the manufacturer keeps making the same products and keeps shipping them regularly (e.g. twice a month) to the same customer.
As a consequence, the assumption is that quality is under control. And an inspection is used to catch the big accidents.
What it means is that the statistics are way, way more favorable to the supplier side than they are to the buyer side.
Can’t see the video? Click here. It lasts for 8 min.
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I hope this series of videos was helpful in clarifying your thoughts about the most common type of sampling plans.
Let me know if you have questions! Thanks.