Thanks for the responses, in regards to the article you are offering
(Chendrix), yes I would be interested in receiving it. My fax is 787
819-6670. Your e-mail does not work.
In article <865u5l$7h6$[EMAIL PROTECTED]>,
[EMAIL PROTECTED] wrote:
> In any situation of this sort, the amount of data you
> need is related to the amount of variation you expect
> to find in the data... and is also related to "how close
> do you want your answer to be to the truth".... and also
> with what probablity do you want to be that close to the
> truth. By truth I mean "true average response" or the
> population average. Statistical sampling theory is usually
> founded on taking a small sample from a large (infinite)
> population so that the sample does not "disturb" the
> population. If the sample size is a significant fraction
> of the entire population (as it will be in this instance,
> with only 20 people in the population), then a correction
> is needed to the usual formula for determining the correct
> sample size. I don't have that formula/correction at
> hand, but if you want it (or want a little paper I wrote
> on this) let me know at [EMAIL PROTECTED] If you
> want the paper, I'll need a fax number to send it to...
> it is not digitized. If the response you are measuring
> is a "pass/fail" response, that makes life easier because
> we can estimate the standard deviation quickly and
> painlessly. When all is said and done, with a population
> of only 20, the sample will need to be a large fraction of
> the population. Perhaps as many as 10 or 12.
> Charlie H.
>
> In article <86536f$j77$[EMAIL PROTECTED]>,
> [EMAIL PROTECTED] wrote:
> > We are going to do a quality system audit (like ISO 9000). How do I
> > choose the sample size for a particular group of people? Let's say
> > that there are 20 supervisors and I will audit their knowledge of
SPC,
> > how many should I choose for the audit?
> >
> > Sent via Deja.com http://www.deja.com/
> > Before you buy.
> >
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.
>
Sent via Deja.com http://www.deja.com/
Before you buy.
