> Steve,
> Your interpretation is right because the coordinates of the ogive
(graph of
> cumulative frequency/ relative cumulative frequency)) indicate "
less than
> the upper limit".
> Jin
Thanks kindly Jin, that's what I think has to be the case.
Steve.
Sent via Deja.com http://www.deja
Steve) Thanks very much for your response.
One might inquire, if one were pursuing this matter in a little more
depth, why one would not prefer a continuous approximating distribution
(e.g., normal, if that be appropriate, as is often the case), on the
basis either that the empirical CFs at hand
>
> first, items don't have intensity ... people do in response TO an
item ...
An item's intensity is defined in terms of the response it elicits in
persons. I'm using Thurstone's terminology. If you're not happy with
that shorthand, fair enough! :-)
> second, just because (to use an analogy
In article <8gcm45$i6e$[EMAIL PROTECTED]>, [EMAIL PROTECTED]
says...
>
>Try the free student version of AMOS for structural equation
>modeling
>http://www.smallwaters.com/amos/student.html
>
>AMOS does factor analysis, path analysis
>and includes online documentation.
There's also the free Mx p
Try the free student version of AMOS for structural equation
modeling
http://www.smallwaters.com/amos/student.html
AMOS does factor analysis, path analysis
and includes online documentation.
In article <8fjhn0$8rd$[EMAIL PROTECTED]>,
"Buoy" <[EMAIL PROTECTED]> wrote:
> Hello to all
>
> I'm a S
In article <[EMAIL PROTECTED]>, G. Anthony Reina <[EMAIL PROTECTED]> wrote:
>We use multiple linear regression to perform our analyses. Because we
>work with binned data (discharge frequency of a neuron) which follow a
>non-normal (Poisson) distribution, we typically use the square root
>transform
- Original Message -
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, May 22, 2000 1:15 AM
Subject: Cumulative Frequency Polygons a right way?
>
>
> Hi all,
>
> First up, the purpose I have at hand is to make interpolations for
> percentages of students who have achieved
i spotted this ...
http://www.sa.psu.edu/sara/pulse/bookstore.html
about 1/2 way down the page ... see the graph titled
"Penn State Bookstore Support for Activities" ...
should these dots be connected?
Dennis Roberts, EdPsy, Penn State University
208 Cedar Bldg., University Park PA 16802
Email
At 12:41 PM 5/22/00 -0500, Herman Rubin wrote: (in response to bob hayden's
note)
>As for outliers, the appropriate meaning for them is that they
>are observations which are incorrect, or for which the assumptions
>of the model are invalid. Those should be removed, as should
>any others of tha
In article <[EMAIL PROTECTED]>, [EMAIL PROTECTED] says...
>
>We use multiple linear regression to perform our analyses. Because we
>work with binned data (discharge frequency of a neuron) which follow a
>non-normal (Poisson) distribution, we typically use the square root
>transform on the dependen
In article <[EMAIL PROTECTED]>, [EMAIL PROTECTED] says...
>
>Check out Minitab Release 13. This is the software used by most of the
Six
>Sigma Black Belt companies. It has very strong DOE, SPC, Process
Capability,
>and Measurement System Analysis tools. Also, make sure you take a look at
>their
The Subject was written as "Distribution Free Tolerance Limits."
- here was the statement,
"We're doing some research in statistical classification of
abnormalities in retinal images (that is, pattern recognization), and
we need to estimate the size of the sample nescesary. We've heard of
some
We use multiple linear regression to perform our analyses. Because we
work with binned data (discharge frequency of a neuron) which follow a
non-normal (Poisson) distribution, we typically use the square root
transform on the dependent variable (discharge rate of the neuron).
(Actually, the transf
In article <8gal3d$a0e$[EMAIL PROTECTED]>,
Manuel Castejon Limas <[EMAIL PROTECTED]> wrote:
>Dear people,
>Im looking for outlier detection methods in non normal multivariate
>distributions.
>Any help would be appreciated.
The idea of an outlier depends heavily on the distribution;
there is no
In article <[EMAIL PROTECTED]>,
Bob Hayden <[EMAIL PROTECTED]> wrote:
>Least squares methods are in some sense optimal when the "errors"
>estimated by the residuals are normally distributed. They are
>questionable when the errors are multimodal, strongly skewed, or
>afflicted with outliers.
L
I wrote:
> I tried, but there was "no response from server".
It's working for me now.
===
This list is open to everyone. Occasionally, less thoughtful
people send inappropriate messages. Please DO NOT COMPLAIN TO
THE PO
At 09:14 PM 5/22/00 +0800, Stephen Humphry wrote:
>It doesn't offer guidance up front exactly, no, but it provides feedback on
>whether items work, and an important (imv) conceptual framework for test
>construction. For example, if you have the Rasch model in mind, you look to
>developing items
The standard deviation of a single batch of numbers is a typical value
for the residuals (deviations from the mean). If you divide by n, it
is the RMS mean of the residuals. You can check your calculation of
the s.d. by comparing it to the residuals. The mean is the measure of
center that minim
Steve,
Your interpretation is right because the coordinates of the ogive (graph of
cumulative frequency/ relative cumulative frequency)) indicate " less than
the upper limit".
Jin
Jineshwar Singh, Coordinator, IDS
Interdisciplinary Department
George Brown College
St .James campus
[EMAIL PROTECT
Check out Minitab Release 13. This is the software used by most of the Six
Sigma Black Belt companies. It has very strong DOE, SPC, Process Capability,
and Measurement System Analysis tools. Also, make sure you take a look at
their help tools (the manuals, on-line help, real-time tutorials, and th
> This is all fine, but please remember that Rasch is essentially a
> sophisticated (and much more thoughtful) mathematical model for
> describing the properties of items and people; it offers no guidance on
> how to write items for an attitude measurement scale. One still has to
> define cons
a cumulative frequency is up to SOME point ... the problem is, WHAT is the
point
does it include THE point? i don't really see much (if any) difference
between (say we have a score scale that goes up to 50 and, 1 point is given
for each valid response) saying we have accumulated 53% to a score
Hello Manuel,
I think a good place to start is Barnett, V and Lewis, T, Outliers in statistical
data.
rick
--- "Manuel Castejon Limas" wrote:
Dear people,
I¥m looking for outlier detection methods in non normal multivariate
distributions.
Any help would be appreciated.
===
On Mon, 22 May 2000 [EMAIL PROTECTED] wrote:
> First up, the purpose I have at hand is to make interpolations for
> percentages of students who have achieved above a certain score on a
> test (where this score may lie between two discrete score points on the
> scale).
One might inquire, if one
On Mon, 22 May 2000 13:24:25 +1000, "Glen Barnett"
<[EMAIL PROTECTED]> wrote:
>I assume you're talking about sample standard deviations,
>not population standard deviations (though interpretation
>of what it represents is similar).
>
> ...
>
>Note that the standard deviation can't exceed half the
Sounds just perfect. Thanks for taking the time!
[EMAIL PROTECTED] wrote:
>The question of discriminating among three or more events has been
>successfully tackled by Brian Scurfield. He extended typical
>two-event ROC analysis to n-event ROC analysis (n>2), where results
>are expressed as n-
Hi all,
First up, the purpose I have at hand is to make interpolations for
percentages of students who have achieved above a certain score on a
test (where this score may lie between two discrete score points on the
scale).
It seems to me cumulative frequencies should be plotted at the exact
u
[EMAIL PROTECTED] wrote:
>
> In a way, yes, they were superseded. There is a school of thought now
> in which the proponents would argue (imv successfully) that the
> approach youve outlined culminated in Raschs Simple Logistic Model.
> Over and above the benefits of the Thurstones comparativ
Glen Barnett wrote:
>
> In article <[EMAIL PROTECTED]>,
> Neil <[EMAIL PROTECTED]> wrote:
> >I was wondering what the standard deviation means exactly?
> >
> >I've seen the equation, etc., but I don't really understand
> >what st dev is and what it is for.
>
> I'm going to take a different t
Dear people,
I am interested in knowing about the different ways
people manage the bad behaviour of MANOVA as soon as the algorithm is used
with irregular number of samples in each class.
Any help would be appreciated.
Dear people,
I´m looking for outlier detection methods in non normal multivariate
distributions.
Any help would be appreciated.
===
This list is open to everyone. Occasionally, less thoughtful
people send inappropriate
In a way, yes, they were superseded. There is a school of thought now
in which the proponents would argue (imv successfully) that the
approach youve outlined culminated in Raschs Simple Logistic Model.
Over and above the benefits of the Thurstones comparative judgements,
the Rasch model allows
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