|Re: HP 15C LE Keyboard Survey Redux|
Message #18 Posted by Paul Gaster on 20 Sept 2011, 8:54 p.m.,
in response to message #1 by M. Joury
How many responses do you really think are necessary?
If you look at an AQL level chart like here, I think we have more than what we need. link
If we pick the most stringent Inspection Level of 3, and we assume this was a 10,000 piece production run, then that falls under the "M" on the chart, which calls for 315 samples.
Yes, it calls for 315 samples, but the number of rejects to reject the whole lot, if we just use AQL of 1.0, is just 8. We are beyond that already, not counting the new rejects in this thread.
If you pick a Level 2 which calls for 200 samples, and the same AQL of 1.0 then you can only have 6 rejects, so playing around with this chart doesn't help you much unless of course you really open up the AQL level. I don't think most HP calculator owners are the type who accept much in the way of defects so that does not seem very acceptable to me.
Edited: 20 Sept 2011, 8:57 p.m.