Jerry Dallal wrote:
As Tukey has pointed out, the null hypothesis of no effect
is not that we think there is no effect, but we are uncertain
of the direction.
I wish I knew more about Delany and its application.
One problem, pointed out by David Salsburg, is that a
substances that
On Thu, 20 Apr 2000 10:48:38 +0100, "P.G.Hamer"
[EMAIL PROTECTED] wrote:
snip, interesting stuff about, proper age-adjusted life-tables,
with proper adjustment of base-line Ns, would not show an increase in
competing causes of death
BTW an even greater problem in animal testing seems to be
Herman Rubin wrote:
The truth myth is highly persistent. We have the Delaney
Clause, which requires the FDA to ban any additive "which
has been found to cause cancer in humans or animals".
Now what does this mean? It is unlikely that anything
does not affect the cancer rate.
We do not
On Thu, 13 Apr 2000, Alan McLean wrote:
Some more comments on hypothesis testing:
My impression of the hypothesis test controversy, which seems to exist
primarily in the areas of psychology, education and the like is that it
is at least partly a consequence of the sheer difficulty of
At 08:37 AM 4/13/00 -0400, Art Kendall wrote:
in the "harder to do" sciences it is common to distinguish an experiment
from a
quasi-experiment.
Part of the difficulty of these fields is that we can not (or ethically may
not) manipulate many independent variables. Therefore we lose the
At 10:23 AM 4/13/00 -0500, Michael Granaas wrote:
In addition to defining the variables some areas do a better job of
defining and therefore testing their models. The ag example is one where
not only the variables are relatively clear so are the models. That is
there is one highly plausible
On Thu, 13 Apr 2000, dennis roberts wrote:
At 10:23 AM 4/13/00 -0500, Michael Granaas wrote:
In addition to defining the variables some areas do a better job of
defining and therefore testing their models. The ag example is one where
not only the variables are relatively clear so are the
Hi Michael,
This sounds to me like lousy experimental design. Surely the purpose of the
experiment is to distinguish between competing theoretical models?
Michael Granaas wrote:
But in some areas in psychology you will have a situation where many
theoretical perspectives predict the same
dennis roberts wrote:
but, if we follow this to some logical conclusion ... this could be
rephrased as meaning ...
situations where you have essentially complete control over variable
manipulation = situations where you can establish 'the truth' (in
terms of the impacts of these
- Original Message -
From: Michael Granaas [EMAIL PROTECTED]
To: EDSTAT list [EMAIL PROTECTED]
Sent: Thursday, April 13, 2000 8:23 AM
Subject: Re: Hypothesis testing and magic - episode 2
In addition to defining the variables some areas do a better job of
defining and therefore testing
11, 2000 7:47 PM
To: EDSTAT list
Subject: Hypothesis testing and magic
I have been reading all the back and forth about hypothesis testing with
some degree of fascination. It's a topic of particular interest to me -
I presented a paper called 'Hypothesis testing and the Westminster
Some more comments on hypothesis testing:
My impression of the hypothesis test controversy, which seems to exist
primarily in the areas of psychology, education and the like (this is
coming from someone who has been involved in education for all my
working life, but with a
At 09:30 AM 4/13/00 +1000, Alan McLean wrote:
In the soft sciences it is easy enough to identify a characteristic of
interest
alan makes good points as usual ... but i totally object to the term 'soft'
sciences ...
what does soft imply? that the science is bad ... or, that merely that
I have been reading all the back and forth about hypothesis testing with
some degree of fascination. It's a topic of particular interest to me -
I presented a paper called 'Hypothesis testing and the Westminster
System' at the ISI conference in Helsinki last year.
What I find fascinating is the
14 matches
Mail list logo
