Include in your list of references on salary differences and gender the
article by M. H. Birnbaum, Relationships among models of salary bias,
American Psychologist, 1985, July, 862-866.
~~~
Karl L. Wuensch, Department of Psychology,
East Carolina
Anonymous God-fearer [EMAIL PROTECTED] wrote:
Does anyone know how to generate a correlation matrix given a covariance
matrix in Splus?
Or could you give the details of how to do it in another language?
corr[i,j] = cov[i,j]/sqrt(cov[i,i]*cov[j,j])
On 28 Feb 2002 07:37:16 -0800, [EMAIL PROTECTED] (Brad Anderson)
wrote:
Rich Ulrich [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]...
On 27 Feb 2002 11:59:53 -0800, [EMAIL PROTECTED] (Brad Anderson)
wrote:
BA
I have a continuous response variable that ranges from 0 to
Dr Jonathan Newman wrote:
I'm trying to find a good introduction to REML (restricted maximum
likelihood). I'm a biologist rather than a statistician. If you have any
suggestions I'd great appreciate hearing them. Thanks.
Lynch Walsh (1998)? (Genetic Analysis of Quantitative Traits,
A good book is
Pinheiro, J.C. and Bates., D.M. mixed models with S and S-Plus,
Springer.
Kjetil Halvorsen
Dr Jonathan Newman wrote:
I'm trying to find a good introduction to REML (restricted maximum
likelihood). I'm a biologist rather than a statistician. If you have any
suggestions
But Mahalanobis distance is sensible to swamping and masking so is it really
a good measure for outliers?
DELOMBA a écrit dans le message ...
What about Hat Matrix ? Mahalanobis distance ?
Yves
Voltolini [EMAIL PROTECTED] wrote in message
Rolf Dalin [EMAIL PROTECTED] wrote:
Brad Anderson wrote:
I have a continuous response variable that ranges from 0 to 750. I only
have 90 observations and 26 are at the lower limit of 0,
What if you treated the information collected by that variable as really
two variables, one
The Enclyclopedia of Biostatistics (Armitage P, Colton T; Wiley,
1999?) has an article on REML.
I have not seen the article, but usually their articles well explain
statistical concepts to non-statisticians.
The Encyclopedia is a resource you might find helpful in general. For
more info, see:
[EMAIL PROTECTED] (Eric Bohlman) wrote in message
news:a5o5b1$fi0$[EMAIL PROTECTED]...
Rolf Dalin [EMAIL PROTECTED] wrote:
IIRC, your example is exactly the sort of situation for which Tobit
modelling was invented.
Considered that (actually estimated a couple of Tobit models and if I
use
On 1 Mar 2002 04:51:42 -0800, [EMAIL PROTECTED] (Mobile Survey)
wrote:
What do i do if I need to run a factor analysis and have non-normal
distribution for some of the items (indicators)? Does Principal
component analysis require the normality assumption.
There is no problem of
On 1 Mar 2002 00:36:01 -0800, [EMAIL PROTECTED] (Alex Yu)
wrote:
I know that robust regression can downweight outliers. Should someone
apply robust regression when the data have skewed distributions but do not
have outliers? Regression assumptions require normality of residuals, but
not
If, for example, normality assumption holds then by doing robust
regression instead of OLS you lose efficiency. So, it's not the same
result after all. But you can do both, compare and decide. If robust
regression produces results which are not really different from the OLS
then stay with OLS.
SR Millis wrote in message [EMAIL PROTECTED]...
What is the correct pronunciation for Akaike as in AIC?
Thanks,
SR Millis (rhymes with bacillus)
In Japanese, all letters are pronounced.
Try: Aka-ee-ke
Now try pronouncing Toyota! `y` is always a consonant in Japanese, so it
should be
to amplifiy a bit, the interpretability of regression tends to go down as
the assumptions of normality and homogeneous variance are markedly
different from reality. You can still go through the calcualtions but the
interpretation of results gets tricky. Factor analysis is a sort of
regression
I would consider it a unipolar extent scale Maybe the visual anchor should be
0 to 6 to aid association with the number line concept
Dennis Roberts wrote:
At 01:39 PM 2/27/02 -0600, Jay Warner wrote:
Not stressful 1__ 2__ 3__ 4__ 5__ 6__ 7__ Very stressful
just out of curiosity how
DMR, I should have read your previous posting more carefully I have now had
coffee
Not stressful 1__ 2__ 3__ 4__ 5__ 6__ 7__ Very stressful
is a question that has an extent response format The cognitive schema the
response format tries to invoke might be reinforced by anchoring with zero for
On 27 Feb 2002 15:01:24 -0800, [EMAIL PROTECTED] (Dennis Roberts) wrote:
At 01:39 PM 2/27/02 -0600, Jay Warner wrote:
Not stressful 1__ 2__ 3__ 4__ 5__ 6__ 7__ Very stressful
just out of curiosity ... how many consider the above to be an example of a
bipolar scale?
i don't
now, if we
Rich Ulrich [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]...
On 27 Feb 2002 11:59:53 -0800, [EMAIL PROTECTED] (Brad Anderson)
wrote:
I have a continuous response variable that ranges from 0 to 750. I
only have 90 observations and 26 are at the lower limit of 0, which is
At 07:37 AM 2/28/02 -0800, Brad Anderson wrote:
I think a lot of folks just run standard analyses or arbitrarily apply
some normalizing transformation because that's whats done in their
field. Then report the results without really examining the
underlying distributions. I'm curious how folks
At 09:51 AM 2/28/02 -0800, Jay Tanzman wrote:
I partially did this, insofar as I ran Pearson and Spearman correlations
between
several of the scales and, not surprisingly, the two correlation coefficients
and their p-values were similar. that issue is entirely a separate
one since the rank
On 27 Feb 2002 14:14:44 -0800, [EMAIL PROTECTED] (Dennis Roberts) wrote:
At 04:11 PM 2/27/02 -0500, Rich Ulrich wrote:
Categorizing the values into a few categories labeled,
none, almost none, is one way to convert your scores.
If those labels do make sense.
well, if 750 has the
In article [EMAIL PROTECTED],
Glen [EMAIL PROTECTED] wrote:
Chia C Chong [EMAIL PROTECTED] wrote in message
news:a5g27d$e57$[EMAIL PROTECTED]...
Hi!
I have a set of random numbers and if I know their expectation/mean, would
it be possible to deduce a PDF to describe the distribution of them?
This is a multi-part message in MIME format.
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charset=iso-8859-1
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What about Hat Matrix ? Mahalanobis distance ?
Yves
Voltolini [EMAIL PROTECTED] wrote in message
00f301c1be68$13413000$fde9e3c8@oemcomputer">news:00f301c1be68$13413000$fde9e3c8@oemcomputer...
Hi,
I would like to know if methods for detecting outliers
using interquartil ranges are indicated
That is either a sloppiness in writing or reliance on the relationship
between eigen decomposition and SVD.
SSM - square symmetric matrix
AM - arbitrary matrix
In ED, SSM = Q E Q'
In SVD, AM = P D Q'
SSM = AM' AM
= Q D P' P D Q' = Q D D Q'
= Q E Q', if E = D D
I haven't
At 04:11 PM 2/27/02 -0500, Rich Ulrich wrote:
Categorizing the values into a few categories labeled,
none, almost none, is one way to convert your scores.
If those labels do make sense.
well, if 750 has the same numerical sort of meaning as 0 (unit wise) ... in
terms of what is being
At 01:39 PM 2/27/02 -0600, Jay Warner wrote:
Not stressful 1__ 2__ 3__ 4__ 5__ 6__ 7__ Very stressful
just out of curiosity ... how many consider the above to be an example of a
bipolar scale?
i don't
now, if we had an item like:
sad happy
1 . 7
THEN the mid point
Good places to start:
Optimal feature extractors, that's better than PCA because you whiten your
inter class scatter and so put all inter class comparisons on the same
level. The good thing is this will also reduce your feature vector
dimensionality to c-1 (where c is # classes). PCA will not do
Corection typo: Should read 'Whiten intra class scatter'
Mark Harrison [EMAIL PROTECTED] wrote in message
news:FIif8.16518$[EMAIL PROTECTED];
Good places to start:
Optimal feature extractors, that's better than PCA because you whiten your
inter class scatter and so put all inter class
Brad Anderson wrote:
I have a continuous response variable that ranges from 0 to 750. I only
have 90 observations and 26 are at the lower limit of 0,
What if you treated the information collected by that variable as really
two variables, one categorical variable indicating zero or non-zero
In article [EMAIL PROTECTED],
Glen Barnett [EMAIL PROTECTED] wrote:
Herman Rubin wrote:
In article a5daqb$72k$[EMAIL PROTECTED],
Chia C Chong [EMAIL PROTECTED] wrote:
Hi!
Does anyone come across some Matlab code to estimate the parameters for the
Cauchy PDF?? Or some other sources about
In article 00f301c1be68$13413000$fde9e3c8@oemcomputer,
Voltolini [EMAIL PROTECTED] wrote:
Hi,
I would like to know if methods for detecting outliers
using interquartil ranges are indicated for data with
NON normal distribution.
The software Statistica presents this method:
data point value UBV
J. Williams wrote:
On Mon, 25 Feb 2002 15:17:55 -0800, Jay Tanzman [EMAIL PROTECTED]
wrote:
I just got chewed out by my boss for modelling the means of some 7-point
semantic differential scales. The scales were part of a written,
self-administered questionnaire, and were laid out like
2. Perhaps more likely, your boss may have learned
(wrongly?) that parametric stats should not be done unless scales
of measurement are at least interval in quality.
I don't know if his objection was to parametric statistics per se, but he did
object to calculating means on these
Jay Tanzman wrote:
Jay Warner wrote:
Jay Tanzman wrote:
I just got chewed out by my boss for modelling the means of some 7-point
semantic differential scales. The scales were part of a written,
self-administered questionnaire, and were laid out like this:
Not stressful
Chia C Chong [EMAIL PROTECTED] wrote in message
news:a5g27d$e57$[EMAIL PROTECTED]...
Hi!
I have a set of random numbers and if I know their expectation/mean, would
it be possible to deduce a PDF to describe the distribution of them?
Knowing the mean tells you (almost) nothing about the
]
Sent: Saturday, February 23, 2002 9:49 AM
Subject: Re: odds vs probabilities
probabilities. I know that probs have a problem in that they don't
make multiplicative sense:
=
Instructions for joining and leaving this list, remarks
Chia C Chong [EMAIL PROTECTED] wrote in message
a5d38d$63e$[EMAIL PROTECTED]">news:a5d38d$63e$[EMAIL PROTECTED]...
Glen [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
Do you want to make any assumptions about the form of the conditional,
or the joint, or
John Ziker wrote:
This research deals with the classical anthropological question of
food sharing among hunters and gatherers. There are a number of
hypotheses being discussed within the field. This study is relevant
for two models, namely kinship cooperation and reciprocity. The
kinship
Mark wrote:
Hi,
I'm CS student interested in Radford Neal thesis called Bayesian
Learning for Neural Networks. I know that some years ago this thesis
was available for download from author's site, but nowadays there
isn't possible. I have searched it on Intenet so I have not known to
Glen Barnett [EMAIL PROTECTED] wrote in message
a5dev7$8jn$[EMAIL PROTECTED]">news:a5dev7$8jn$[EMAIL PROTECTED]...
Chia C Chong [EMAIL PROTECTED] wrote in message
a5d38d$63e$[EMAIL PROTECTED]">news:a5d38d$63e$[EMAIL PROTECTED]...
Glen [EMAIL PROTECTED] wrote in message
[EMAIL
On 25 Feb 2002 07:56:56 -0800, [EMAIL PROTECTED] (kjetil
halvorsen) wrote:
It isstraightforward tlo write down the loglikelihood, and then whatever
optimization routine (there must be one in Matlab) will help you!
Just be careful when searching, because Cauchy likelihoods are
frequently
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That being said, occasions can arise where there are outliers other than
from measurement or data entry error. Different disciplines have different
approaches.
What discipline are
of course, if one has control over the data, checking the coding and making
sure it is correct is a good thing to do
if you do not have control over that, then there may be very little you can
do with it and in fact, you may be totally UNaware of an outlier problem
i see as a potentially MUCH
Voltolini wrote:
Hi,
I would like to know if methods for detecting outliers
using interquartil ranges are indicated for data with
NON normal distribution.
The software Statistica presents this method:
data point value UBV + o.c.*(UBV - LBV)
data point value LBV - o.c.*(UBV - LBV)
Herman Rubin wrote:
In article a5daqb$72k$[EMAIL PROTECTED],
Chia C Chong [EMAIL PROTECTED] wrote:
Hi!
Does anyone come across some Matlab code to estimate the parameters for the
Cauchy PDF?? Or some other sources about the method to estimate their
parameters??
What is so difficult
Voltolini wrote:
Hi,
My doubt isan outlier can be a LOW data value in the sample (and not
just the highest) ?
Several text boks dont make this clear !!!
What makes an outlier an outlier is your model. If your model accounts
for all the observations, you can't really call any of
Jay Tanzman wrote:
I just got chewed out by my boss for modelling the means of some 7-point
semantic differential scales. The scales were part of a written,
self-administered questionnaire, and were laid out like this:
Not stressful 1__ 2__ 3__ 4__ 5__ 6__ 7__ Very stressful
So, why or
Art Kendall wrote:
[snip good points]
in your quasi-experiment you can possibly contrast different levels of specific
pollutants, as well as kinds of pollutants, in different rivers at different
times.
I'm not a biologist, but I would be amazed if temperature did not affect
population
Rich Ulrich wrote:
I've always done this in SPSS (6.1 and earlier) with
ANOVA vara by grps(1,4) with covar/
Likewise.
However, as I'm in a funny mood, it occurred to me that you could
use the residuals from correlating the covariates with the separate
grooup scores as input to a
Henry [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
On Fri, 22 Feb 2002 08:55:42 +1100, Glen Barnett
[EMAIL PROTECTED] wrote:
Bob [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
A straight line CDF would imply the data is
Let me take a (somewhat) contrarian position to those previously
expressed. An experiment is any test of a hypothesis. An experiment can
involve the use of observational (unmanipulated) data, as long as the
hypothesis is clearly stated prior to the collection of the data. While
it is true that an
On 19 Feb 2002 15:14:01 -0800, [EMAIL PROTECTED] (Trevor Bond)
wrote:
[ snip, much ]
affected who won the gold medal. In fact, Looney (1994, p. 156)
concluded:
all of the judges with an Eastern block or communistic background
not only ranked Baiul better than expected, but ranked
Title: RE: SPC control limits
Jay Warner writes:
The 'party line' is to take the first 30 or so points, calculate
limits, throw out any outside ones add more at the end, until you
have 30 points, all of which are inside the control limits.
Actually, I have heard the opposite. Out
On Sat, 23 Feb 2002 00:27:00 +1100, Glen Barnett
[EMAIL PROTECTED] wrote:
Henry [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
On Fri, 22 Feb 2002 08:55:42 +1100, Glen Barnett
[EMAIL PROTECTED] wrote:
Bob [EMAIL PROTECTED] wrote in message
[EMAIL
SSCHEINE wrote:
Let me take a (somewhat) contrarian position to those previously
expressed. An experiment is any test of a hypothesis. An experiment can
involve the use of observational (unmanipulated) data, as long as the
hypothesis is clearly stated prior to the collection of the data.
Henry [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
I was trying to suggest that he meant the slope of the CDF was the
height of the PDF.
Oh, okay. Yes, that would be correct, but it shouldn't be called probability!
Glen
Inasmuch as the objective is to 'drain the swamp' - reduce product
process variation, I find that in practice Wheeler's suggestion of focus
on causes of that variation is on the mark. the procedure from the
old Ford Manual, and I believe the 6th 7th Ed. of Grant Leavenworth,
puts the focus on
Thanks for the enlightenment, George.
I misinterpreted what was said in Numerical Recipes, where it starts
by
referring to the Box-Muller method, then gives your algorithm without
any
intermediate referral. Hence I had always thought of this method as
being B-M.
Hey, I learnt something new, can
Bob [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
[EMAIL PROTECTED] (Linda) wrote in message
news:[EMAIL PROTECTED]...
Hi!
If I plot CDF of a sample data and this CDF looks like a straight line
cross through 0. What does this implies?? Normally, CDF
[EMAIL PROTECTED] (Linda) wrote in message
news:[EMAIL PROTECTED]...
Hi!
If I plot CDF of a sample data and this CDF looks like a straight line
cross through 0. What does this implies?? Normally, CDF will not look
like a straight line but sth like a S2 shape, isn't??
Linda
A straight
I would fit the data with various (r,p) arma models with the
the desired garch assumption on the evolution of the variance
and consider both the likelihood ratios and autocorrelation
of the standardized residuals to determine the best model
to fit the data. I have code for this if you want
On Fri, 22 Feb 2002 08:55:42 +1100, Glen Barnett
[EMAIL PROTECTED] wrote:
Bob [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
A straight line CDF would imply the data is uniformly distributed,
that is, the probability of one event is the same as the probability
On Wed, 20 Feb 2002 22:21:38 -, Chia C Chong
[EMAIL PROTECTED] wrote:
[snip, various discussion before]
I have an example of data of 2 RVs. When I tested the correlation between
them, by simply find the correlation coefficient, it shows that the
correlation coefficient is so small and
In article [EMAIL PROTECTED],
Zachary Agatstein [EMAIL PROTECTED] wrote:
Can you help me solve this problem:
There are 8 baskets and 4 apples. Thrown at random, 3 of the 4 apples
can go to any basket. The 4th apple, however, can only be thrown into
baskets 1 through 4. What is the
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Ronny Richardson
Sent: Wednesday, February 20, 2002 7:29 PM
To: [EMAIL PROTECTED]
Subject: Chi-square chart in Excel
Can anyone tell me how to produce a chart of the chi-square distribution in
Excel? (I
Yvette wrote:
Prediction Model using double exponential smoothing to estimate the
linear trend in prices (as originally reported) and extending the
trend to future years. The base period is about 8-10 years and a
smoothing constant needs to be used to make the trend fairly
responsive to
sure is easy in minitab ... one can draw a very nice curve (it's easy but,
hard to post here) but, to make a distribution easy for viewing we can
MTB rand 10 c1; generated 10 values from
SUBC chis 4. a chi square distribution with 4 degrees of freedom
MTB dotp c1
Dotplot: C1
OK. You have a case where you sample from a 'population' of times from situation A a
number of times, and from Situation B a number of times. Maybe C, D, etc. too.
To compare 2 of these babies, use a t test. Keep sample size (n's of each) about
equal, and go for it. Student 't' test is
The Box-Muller algorithm rejects roughly 22.5% of the
generated points. I'm not aware of any bound on the number
of consecutive rejections, other than a statistical one, hence
my statement. I would welcome correction if this is not the case.
Regards
Ian
Radford Neal [EMAIL PROTECTED] wrote
I do not think this will satisfy on its own but it seems a good
starting point. SPSS has up on its web pages the statistical
algorithms for many of its procedures:
http://www.spss.com/tech/stat/algorithms.htm
As these are not the computer algorithmns (at least I hope not) I
think you will
Ian Buckner [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
The Box-Muller algorithm rejects roughly 22.5% of the
generated points. I'm not aware of any bound on the number
of consecutive rejections, other than a statistical one, hence
my statement. I would
Herman Rubin wrote:
ExpVar = -ln(UnifVar);
It is not a good method in the tails, and is much too slow.
If I recall correctly, transcendental operations on a Pentium require
only a couple hundred clock cycles and can usually be optimized to take
place during other
well, one simple way would be to add B and C ... then correlate with A
if these are radically different scales, convert to z scores first
At 02:05 AM 2/20/02 -0800, Holger Boehm wrote:
Hi,
I have calculated correlation coefficients between sets of parameters
(A) and (B) and beween (A) and
Next question:
How much does Rasch analysis depend upon the evaluators being ignorant
that the method will be used?
In other words, can
(A) one Rasch-aware judge
(B) a minority of Rasch-aware judges
(C) a majority of Rasch-aware judges (but not the
?? It is well known. Haven't you checked the
Combined Index to Statistics, or even looked in
The Encyclopedia of Statistical Sciences?
Niko Tiliopoulos wrote:
Hello everybody,
Has anybody heard of the Bell-Doksum test? If so could you please give
me a reference or a short descriptiion of
At 03:59 PM 2/20/02 -0300, Voltolini wrote:
Hi,
I was reading a definition of experiment in science to be used in a
lecture and the use of treatments and controls are an important feature of
an experiment but my doubt is... is it possible to plan an experiment
without a control and call
You can start with checking if they are correlated. It's simpler to do. If
you find that they are correlated then you have the answer to your
question.
If you find that they are uncorrelated and you have a reason to believe
that they may be not independent anyway then you can look for more
the real question is, 'how much accuracy (precision, variance) is
suitable?'
If you were to repeat the simulation run (i.e., a test) a total of n
times, then you could say that the true mean elapsed time was x-bar +/-
(certain amount), with say 95% confidence.
That is, if you were to then
[EMAIL PROTECTED] (Holger Boehm) wrote in message
news:[EMAIL PROTECTED]...
Hi,
I have calculated correlation coefficients between sets of parameters
(A) and (B) and beween (A) and (C).
Now I would like to determine the correlation between (A) and (B
combined with C). How can I combine
On 20 Feb 2002 08:50:19 -0800, [EMAIL PROTECTED] (MrTequila)
wrote:
Hi all, hope this is the right place.
i was just wondering what you should do when you establish some
control limits but some of the data points you've just used are
outside of the limits you just established?
should
Vadim and Oxana Marmer [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
You can start with checking if they are correlated. It's simpler to do. If
you find that they are correlated then you have the answer to your
question.
If you find that they are
to Consolidate
people into groups and then re-run the data. I'm not sure if this
will make a difference, but this is how i see it done in the
literature.
Statistics is interesting, it is hard to find information on the
problems you come across and they can only be tackled by running more
queries from
On Wed, 20 Feb 2002 19:30:19 -, Chia C Chong
[EMAIL PROTECTED] wrote:
Vadim and Oxana Marmer [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
You can start with checking if they are correlated. It's simpler to do. If
you find that they are correlated
Voltolini wrote:
Hi,
I was reading a definition of experiment in science to be used in a
lecture and the use of treatments and controls are an important feature of
an experiment but my doubt is... is it possible to plan an experiment
without a control and call this as an
Voltolini wrote:
Hi,
I was reading a definition of experiment in science to be used in a
lecture and the use of treatments and controls are an important feature of
an experiment but my doubt is... is it possible to plan an experiment
without a control and call this as an
[EMAIL PROTECTED] (The Truth) wrote:
I suppose I should have been more clear with my question. What I
essentially require is a textbook which presents algorithms like Monte
Carlo, Principal Component Analysis, Clustering methods,
MANOVA/MANACOVA methods etc. and provides source code (in C ,
Rich Ulrich [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
On Wed, 20 Feb 2002 19:30:19 -, Chia C Chong
[EMAIL PROTECTED] wrote:
Vadim and Oxana Marmer [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
You can start
Linda [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
Hi!
I have some experimental data collected and can be grouped into 2
variables, X and Y. One is the dependent variable (Y) and the other is
an independent variable (X). What test shall I made to check
Ronny Richardson wrote:
Can anyone tell me how to produce a chart of the chi-square distribution in
Excel? (I know how to find chi-square values but not how to turn those into
a chart of the chi-square curve.)
Ronny Richardson
Niko Tiliopoulos wrote:
Hello everybody,
Has anybody heard of the Bell-Doksum test?
IIRC it's like a Wilcoxon 2-sample test, except that the ranks are
transformed to normal scores. If that's the right test, it has ARE 1 vs
the t-test (it has good power for small deviations), but as you
Generated on custom silicon (surprise).
Box-Muller does not work for real time requirements.
Ian
Glen Barnett [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
Ian Buckner wrote:
We generate pairs of properly distributed Gaussian variables at
down to 10nsec
In article [EMAIL PROTECTED],
Dennis Roberts [EMAIL PROTECTED] wrote:
not to disagree with alan but, my goal was to parallel what glass and
stanley did and that is all ...seems like there are all kinds of
distributions one might discuss AND, there may be more than one order that
is acceptable
In article [EMAIL PROTECTED],
Dennis Roberts [EMAIL PROTECTED] wrote:
addendum
if one manipulates n and p in a binomial and, gets to a point where a
person would say (or we would say as the instructor) that what you see is
very similar to ... and might even be approximated well by ... the nd
In article [EMAIL PROTECTED],
Robert J. MacG. Dawson [EMAIL PROTECTED] wrote:
Linda wrote:
I want to generate a series of random variables, X with exponential
PDF with a given mean,MU value. However, I only want X to be in some
specified lower and upper limit?? Say between 0 - 150 i.e.
At 07:34 AM 2/19/02 -0500, Herman Rubin wrote:
I do not see this. The binomial distribution is a natural
one; the normal distribution, while it has lots of mathematical
properties, is not.
i don't know of any distribution that is natural ... what does that mean?
inherent in the universe? all
Box-Muller does not work for real time requirements.
This isn't true, of course. A real time application is one where
one must guarantee that an operation takes no more than some specified
maximum time. The Box-Muller method for generating normal random
variates does not involve any operations
On Mon, 18 Feb 2002 20:57:36 +0100, jan plessers
[EMAIL PROTECTED] wrote:
Hello,
I did a likert on 2 groups, a Mann-whitney showed that ther was a
significant difference between the 2 groups.
If 'did a Likert' means what I expect, and
the scaling was decent enough to be worth commenting
On 18 Feb 2002 16:29:27 -0800, [EMAIL PROTECTED] (Wuzzy) wrote:
You should take note that R^2 is *not* a very good measure
of 'effect size.'
Hi Rich, you asked to see my data,
- I don't remember doing that -
i've posted the visual at
In article [EMAIL PROTECTED],
Radford Neal [EMAIL PROTECTED] wrote:
Box-Muller does not work for real time requirements.
This isn't true, of course. A real time application is one where
one must guarantee that an operation takes no more than some specified
maximum time. The Box-Muller method
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