In article <[EMAIL PROTECTED]>,
dennis roberts <[EMAIL PROTECTED]> wrote:
>At 02:11 PM 8/20/00 -0500, Herman Rubin wrote:
>> It is necessary to simultaneously consider all
>> consequences of the proposed action in all
>> states of nature.
>every now and then, herman tosses in thi
Many people - including me - have been saying this for at least 20
years. The trouble is that people have different opinions on what the
'concepts' are. Plus maths is in many ways the best way to explain some
of the concepts. And then you need to relate the maths to the
methodological issues..
i certainly agree with herman when he has stated such things as ... the
null is rarely if ever true ... YET ... we keep testing it (not herman but,
most of the rest of us) ... and, i agree that when we consider research ...
we need to have an eye on potential sources of impact on outcomes that we
dennis roberts wrote:
>
> At 02:11 PM 8/20/00 -0500, Herman Rubin wrote:
>
> > It is necessary to simultaneously consider all
> > consequences of the proposed action in all
> > states of nature.
>
> every now and then, herman tosses in this dart ... but, i have never once
> he
At 02:11 PM 8/20/00 -0500, Herman Rubin wrote:
> It is necessary to simultaneously consider all
> consequences of the proposed action in all
> states of nature.
every now and then, herman tosses in this dart ... but, i have never once
heard him say what the heck this means ...
In article <[EMAIL PROTECTED]>,
Sheila King <[EMAIL PROTECTED]> wrote:
>Several people have pointed out, in response to my original question,
>that
>xbar is the point estimator
>and
>xbar +/- ME is an interval of points.
>Sorry I wasn't more clear in my original post.
>I was aware of that di
unfortunately, most books are not clear on everything ... hopefully, the
book will deal with basic issues and concepts reasonably well
ask students the following:
say you were at the race track and ... you have picked your favorite horse
for race #7 ...
1. how many minutes do you think it wil
Several people have pointed out, in response to my original question,
that
xbar is the point estimator
and
xbar +/- ME is an interval of points.
Sorry I wasn't more clear in my original post.
I was aware of that difference pointed out above.
The problem is, the text I'm using states in the s
if you have X bar .. that IS the point estimate OF mu ... (it is one value)
if you have calculated some confidence interval ... then that is the
INTERVAL estimate of mu ... (this is a range of values within which ... you
hope that mu falls ... )
to build the CI ... you start with a point estim
There is no point estimate here. Both are interval estimates and the
Sheila King wrote:
> Point estimation, for mu:
>
> Use x bar (sample mean) as estimator for x bar. If the size of the data
> sample is at least thirty, and the population standard deviation is not
> known, use the data sa
Sheila King wrote:
> Point estimation, for mu:
>
> Use x bar (sample mean) as estimator for x bar. If the size of the data
> sample is at least thirty, and the population standard deviation is not
> known, use the data sample's standard deviation as an approximation
> thereof. Compute the SE fo
Point estimation, for mu:
Use x bar (sample mean) as estimator for x bar. If the size of the data
sample is at least thirty, and the population standard deviation is not
known, use the data sample's standard deviation as an approximation
thereof. Compute the SE for x bar which is
population std d
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