M
Hi Covers,
There's lots of information on the web and textbooks about AQLs and sample sizes, and lots of tutorials on how to read the Z1.4 charts and what not. Lots of very helpful information in thsi forum as well!
I am assuming that Z1.4 and MIL 105 are fundamentally based on the normal (gaussian) distribution and can be shown visually with an OC curve.
Does anyone have (or can point me to) a ***derivation*** of the basis of the General Inspection Levels I, II, & III, and the Special Inspection Levels. Hopefully it has an historical element to it as well, to show why the charts are the way they are (I am aware that this all started in WWII for military ordinance).
Thanks!
There's lots of information on the web and textbooks about AQLs and sample sizes, and lots of tutorials on how to read the Z1.4 charts and what not. Lots of very helpful information in thsi forum as well!
I am assuming that Z1.4 and MIL 105 are fundamentally based on the normal (gaussian) distribution and can be shown visually with an OC curve.
Does anyone have (or can point me to) a ***derivation*** of the basis of the General Inspection Levels I, II, & III, and the Special Inspection Levels. Hopefully it has an historical element to it as well, to show why the charts are the way they are (I am aware that this all started in WWII for military ordinance).
Thanks!

