At 08:54 AM 5/27/2005, Gerhard Fiedler wrote: >Spehro Pefhany wrote: > > > They said "The failure rate could be as high as 30%.". It "could" also be > > as low as zero, perhaps. > >They also didn't say 30% of what... I'm always surprised how much >discussion can happen about the actual value of a percentage without >anybody knowing the base of that percentage. > >If I buy one part and it's defective, my failure rate of that part is 100% >(at least when using the "popular" meaning of % -- keep in mind that we're >not really talking about statistics here :). Indeed, your sample size it statistically meaningless. >Then the "could be as high as"... Employing statistics, for any finite >selection with finite error rates you get a non-0 probability that there is >a failure rate of 100%. I think it's obvious that the high defect rate quoted was intended to deter black market purchasers. Interesting opportunity for their competition though, to have a look at "raw" output and what Max's yield rates are, if they are truly untested parts, which seems doubtful. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist