Re: Inspection example

"MJ" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> There used to be a demonstration of why final inspection didn't work,
> consisting of a paragraph of written text. You had to treat a word ("THE"
I
> think) within that text as a fault and then count the number of faults.
>
> Does anyone know where I can find this ?
>
> Thanks in advance
>
Don't know that one but Juran in his Quality Control Handbook has:
"Federal fuses are the results of years of scientific study combined with
 the experience of years".
 He says that when a group is shown the sentence for about 30 sec and asked
to count the 'f's the average count is about 80% of the actual number.
The argument is that 100% inspection is often less effective than careful
inspection of a random sample.
JD