The Financial News, September 2001
Production Mini-plants in mobile containers
"...Science Network will supply to countries and developing regions the technology and the necessary support for the production in series of Mini-plants in mobile containers (40-foot). The Mini-plant system is
Dear Debater,
I've got two models which are nested (or hierarchical), and values
likelihood ratio chi-square (L^2) for them with degrees of freedom :
1 model: L^2 =21.93 , df=16
2 model: L^2=22.13 , df=18
I read that it' posible to settle which model is better (because they are
I am looking for interested parties to present next June in the field
of Intermittent Demand Forecasting.
Of course, if you have an interest in another area I will be glad to
pass your name on to for consideration. If you are interested send me
an e-mail at [EMAIL PROTECTED] stating a synopsis
Hi,
I've been teaching an introductory stats course for several years.
I always learn something from my students...hope they learn too.
One thing I've learned is that confidence intervals are very tough
for them. They can compute them, but why?
Of course, we talk about confidence interval
re: the formula:
n = (Z?/e)2
could you express E as a % of a standard deviation .
In other words does a .02 error translate into .02/1 standard deviations,
assuming you are dealing w/a normal distribution?
=
Thanks for the formula, but I was really interested in knowing what % of a
standard deviation corresponds to E.
In other words does a .02 error translate into .02/1 standard deviations?
Graeme Byrne [EMAIL PROTECTED] wrote in message
9orn26$m80$[EMAIL PROTECTED]">news:9orn26$m80$[EMAIL
as a start, you could relate everyday examples where the notion of CI seems
to make sense
A. you observe a friend in terms of his/her lateness when planning to meet
you somewhere ... over time, you take 'samples' of late values ... in a
sense you have means ... and then you form a rubric like
From my understanding, there are three popular ways to analyze the following design
(let's call it the pretest-posttest control-group design):
R Pretest Treatment Posttest
R PretestControl Posttest
In the social sciences (e.g., see Pedhazur's popular regression text), the most
Dennis:
Example A is a mistaken interpretation of a confidence interval for a mean.
Unfortunately, this is is a very common misinterpretation.
What you have described in Example A is a _prediction_ interval for
an individual observation. Prediction intervals rarely get taught except
(maybe)
in
At 02:26 PM 9/26/01 -0500, Burke Johnson wrote:
From my understanding, there are three popular ways to analyze the
following design (let's call it the pretest-posttest control-group design):
R Pretest Treatment Posttest
R PretestControl Posttest
if random assignment has
At 04:49 PM 9/26/01 +, John Jackson wrote:
re: the formula:
n = (Z?/e)2
could you express E as a % of a standard deviation .
In other words does a .02 error translate into .02/1 standard deviations,
assuming you are dealing w/a normal distribution?
well, let's see ... e is
Have you tried simulations? with something like Resampling Stats or
Minitab?
WBW
On 26 Sep 2001, Warren wrote:
Hi,
I've been teaching an introductory stats course for several years.
I always learn something from my students...hope they learn too.
One thing I've learned is that confidence
In article [EMAIL PROTECTED],
Dennis Roberts [EMAIL PROTECTED] wrote:
as a start, you could relate everyday examples where the notion of CI seems
to make sense
A. you observe a friend in terms of his/her lateness when planning to meet
you somewhere ... over time, you take 'samples' of late
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some people are sure picky ...
given the context in which the original post was made ... it seems like the
audience that the poster was hoping to be able to talk to about CIs was not
very likely to understand them very well ... thus, it is not unreasonable
to proffer examples to get one into
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