Michael Granaas ([EMAIL PROTECTED]) wrote:
: While more careful admissions processes would certainly limit the
: variability in students, and therefor grading, how is it any different
: from grading? If you are going to be more careful with admissions you
: need a ranking system of some sort to
Richard A. Beldin, Ph.D. ([EMAIL PROTECTED]) wrote:
: When my students asked me (as a class) to grade on a curve, I suggested the
: following alternative.
: "Place N chips in a can. Let them marked in the following way: 10%F, 20%D, 40%C,
: 20%B, 10%A. Let each student pick a chip and leave the
Robert McGrath ([EMAIL PROTECTED]) wrote:
:
: If what you mean is that really large samples can lead to distorted
: results of significance tests, I would disagree. The problem is not
: that the sample is too big, but that Significance tests are interpreted in
: inappropritae ways when readers
Robert Dawson ([EMAIL PROTECTED]) wrote:
: Well, yes, there are; there is no easy way to pass on a reference
: any more. It is aggravating when you want to send somebody the URL for
: one page in a big site and it is a frame on a huge page, so that the
: URL gets you only to the "home frame".
Mike Hewitt ([EMAIL PROTECTED]) wrote:
: I am looking for assistance in interpreting results of a study. It
: involved the testing of three different music practicing conditions. I
: performed a GLM-repeated measures with three factors (modeling,
: self-listening, self-evaluation) in addition
Karl L. Wuensch [EMAIL PROTECTED] wrote:
I think that Bob Hayden is on to something essential here ("I noted that
Karl presented all the understandings he sought verbally on the list. Why
not do the same in class?"). I think of the "definitional formulae" just as
a convenient shorthand for
[EMAIL PROTECTED] wrote:
Two probability questions...
If X has chi-square distribution with 5 degrees of freedom
1. what is the probability of X 3
Look that value up in a chi-square table and find out.
2. what is the probability of X 3 given that X 1.1
Look both values up in a table
dennis roberts [EMAIL PROTECTED] wrote:
[regarding the "point biserial correlation"]
and it certainly has nothing to do with a "shortcut" formula for
calculating r ... it MAY have decades ago but it has not for the past
20 years ...
While I certainly agree that many textbooks convey
dennis roberts [EMAIL PROTECTED] wrote:
At 06:14 AM 10/21/00 +, Eric Bohlman wrote:
1) It demonstrates that a correlation problem in which one variable is
dichotomous is equivalent to a two-group mean-difference problem.
maybe you can make this point but, to a typical student ... i would
Herman Rubin [EMAIL PROTECTED] wrote:
As we get more complex situations, like those happening
in biology, and especially in the social sciences, it is
necessary to consider that models may have substantial
errors and still be "accepted", as one can only get some
understanding by using
Reg Jordan [EMAIL PROTECTED] wrote:
It's interesting that no Republicans have claimed that the ballot was misleading --
all the complaints seem to come from Democrats. Wouldn't the "misleading, confusing"
nature of the ballot apply equally across the voting spectrum?
Bush's name and hole were
Ronald Bloom [EMAIL PROTECTED] wrote:
Would the group of kids doing a post-hoc experiment be
biased inasmuch as the nature of the problem at hand may
have become common-knowledge by now; even among kids; and
so one would be forewarned of the error-mode in question,
and be much less likely
In sci.stat.edu Ronald Bloom [EMAIL PROTECTED] wrote:
So far, NOT ONE person here has responded to my
point that the likelihood of getting into a tangle
of some sort with a machine or mechanical procedure
of some kind does not necessarily have anything
to do with one's level of literacy!
Robert J. MacG. Dawson [EMAIL PROTECTED] wrote:
Therefore, I would not expect regression to the mean to be sufficient
to explain the observed outcome (in which "practically no" top schools
met expectations); and I conclude that the goals may well have been
otherwise unreasonable.
Philip Ackerman [EMAIL PROTECTED] wrote:
Hello,
I have a question regarding the term independent, identically
distributed random variables. For example, suppose that your random
variable is height, and the population of interest is adult males. You take
a sample (size n) of adult males,
In sci.stat.consult Graeme Byrne [EMAIL PROTECTED] wrote:
In short, you don't. If the number of terms in the model equals the number
of observations you have much bigger problems than not being able to compute
adjusted R^2. It should always be the case that the number of observations
exceed
Dennis Roberts [EMAIL PROTECTED] wrote:
if we take the infamous #39 item ... where the options were (if i recall)...
A. mean only
B. median only
C. range and mean
D. range and median
well, even if we accepted this item as fair ...
a student looks at the graph ... sees that there is a
Ivan Balducci [EMAIL PROTECTED] wrote:
I would like to understand the meaning of negative Cohen´s Kappa value
(1960). I got it from the following data (from Dental Radiology):
Magnetic resonance versusFacial Pain Total
Yes No
John Kane [EMAIL PROTECTED] wrote:
Dennis Roberts wrote:
At 08:56 AM 11/16/01 -0700, Roy St Laurent wrote:
It's not clear to me whether recent posters are serious about these
examples, but
I will reiterate my previous post:
For most mathematics / statistics examinations, the answer to a
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
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])
Bob Hayden [EMAIL PROTECTED] wrote:
The most cost-effective method is to roll a die. (See Deming.)
If the representative's performances all lie within the control limits for
the process that's being measured, yes. If one or more representatives'
performances lie outside the system on the
Rich Ulrich [EMAIL PROTECTED] wrote:
On Thu, 29 Mar 2001 10:17:09 +0200, "Nicolas Voirin"
[EMAIL PROTECTED] wrote:
OK, thanks.
In fact, it's a "visual" method to see a set of points with the better
view (maximum of variance).
It's like to swivel a cube around to see all of its
Rich Ulrich [EMAIL PROTECTED] wrote:
- Intelligence, figuring what it might be, and categorizing it, and
measuring it... I like the topics, so I have to post more.
On Thu, 05 Apr 2001 22:09:33 +0100, Colin Cooper
[EMAIL PROTECTED] wrote:
(2) Gould's implication is that since Spearman
Mark W. Humphries [EMAIL PROTECTED] wrote:
Hi,
I am attempting to self-study basic multivariate statistics using Kachigan's
"Statistical Analysis" (which I find excellent btw).
Perhaps someone would be kind enough to clarify a point for me:
If I understand correctly the t test, since it
W. D. Allen Sr. [EMAIL PROTECTED] wrote:
Five different condiments, plus no condiments, means 6*5*4*3*2*1 = 720
distinct combinations.
I wanted that with *fries* and *ketchup*! *Not* ketchup and fries!
=
Instructions for
Warren Sarle [EMAIL PROTECTED] wrote:
Telling the Truth About Damned Lies and Statistics
By JOEL BEST
[snip]
So the prospectus began with this (carefully footnoted) quotation: Every year
since 1950, the number of American children gunned down has doubled. I had
been invited to serve on the
Rich Ulrich [EMAIL PROTECTED] wrote:
On 26 May 2001 03:50:32 GMT, Elliot Cramer [EMAIL PROTECTED]
wrote:
I don't see how RTM can explain the average change in a prepost design
- explanation: whole experiment is conducted on patients
who are at their *worst* because the flare-up is what
Bekir [EMAIL PROTECTED] wrote:
2. There are apparently and exactly three groups; groups 1, 3, 5 that
had the same proportions of translocation. Therefore, to compare only
the group 2 and 3 with the control can be appropriate, can it be?
Thus, there would be two comparisons and the p valus
In sci.stat.consult haytham siala [EMAIL PROTECTED] wrote:
I have a question regarding factor analysis: Is normality an important
precondition for using factor analysis?
It's necessary for testing hypotheses about factors extracted by
Joreskog's maximum-likelihood method. Otherwise, no.
If
In sci.stat.edu Monica De Stefani [EMAIL PROTECTED] wrote:
Hi, is there anybody known
Quade, D. (1976) . Nonparametric partial correlation, Measurement in
the social Sciences. Edited by H.M. Blalock, Jr. Aldine Publishing
Company: Chicago, 369-398?
I would known how he calcolate Kendall's
31 matches
Mail list logo
