Re: PLEASE HELP

["Dr. W. J. Latzko" <Latzko@att.net>]

At 08:32 PM 11/8/2001 -0600, you wrote:
>Over time, have tried following your discussions. Many make sense. Yet 
>your standard statistic short-hand often loses me. See following examples:
>c-chart
>{SNIP}
>and similar, key but seeming exotica.
>
>UCL, LCL, mean, median, mode, variance, and std dev are terms already 
>familiar. And looks alone suggest xbar may symbolise arithmetic mean. For 
>terms not expressly defined--Why guess?
>
>You can best help by telling me:
>1. The name for each item (or concept) in standard, statistic language.
>2. What each named item does.
>3. When and/or how one uses the named item.
>4. The impact of using or not using the named item. (Why is it important?)
>5. The title of at least one very lucid book that explains in baby-terms 
>all key items (concepts) one should know before trying to find causes 
>behind recorded outputs.

Mr. Roberts message shows that our audience has broadened to include those 
who seeking some very basic information. It may be of assistance to both 
those with expertise and those who are not familiar with the terms we use 
to have a glossary of the kind that Mr. Roberts needs on the Web Site, 
either Deming's or Clemson. In that way we can still use the terms so 
familiar to many of us and have an explanation available for those who are 
seeking to add to their knowledge base.

To add an explanation in every message sent is difficult. At what level 
should this explanation be aimed? For instance, the c-chart (that is the 
name of the procedure) is a Shewhart control chart used to plot a form of 
attribute data. (Do we define attribute? or Shewhart chart?) The purpose of 
the chart is to detect special causes. (Do we define special causes?) It is 
used when we deal with non-conformities and the underling process generates 
a constant or nearly constant volume. Etc. Would it not be better to refer 
those interested to a source that explains all of the terms in detail. 
There are a number of texts that can supply far more information than we 
could add in our messages.

Mr. Roberts deserves our thanks for pointing out the need for more 
dissemination of information that is not known to all of the DEN 
subscribers. I think a source on the web would help fill his need.

Bill Latzko