I am working on a dataset, which involves three categorical (two
dichotomies, and one of 5 categories) independent variables and a continuous
variable that consists of counts. The idea is to look at the significance of
the group differences/ the (main and interaction) effects of the
independents
i have put up a little worked out example of the partitioning of SS in a
simple 3 group situation ... for ANOVA ... with a diagram of where the
components come from ...
http://roberts.ed.psu.edu/users/droberts/introstat/sspart1.png
this might be helpful to some ...
if you want to print ...
BW == Bruce Weaver [EMAIL PROTECTED] writes:
BW On Sun, 18 Nov 2001, Stan Brown wrote:
What _is_ biostatistics, anyway? A student asked me, and I
realized I have only a vague idea.
BW There was a thread on biostatistics versus statistics a
BW couple years ago, I think,
At 03:08 PM 11/19/01 +, A.J. Rossini wrote:
BW == Bruce Weaver [EMAIL PROTECTED] writes:
BW On Sun, 18 Nov 2001, Stan Brown wrote:
What _is_ biostatistics, anyway? A student asked me, and I
realized I have only a vague idea.
BW There was a thread on biostatistics
DR == Dennis Roberts [EMAIL PROTECTED] writes:
DR At 03:08 PM 11/19/01 +, A.J. Rossini wrote:
BW == Bruce Weaver [EMAIL PROTECTED]
writes:
BW On Sun, 18 Nov 2001, Stan Brown wrote:
What _is_ biostatistics, anyway? A student asked me, and I
realized I
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
Callender and Osburn (Educational and Psychological Measurement,
1977, 37, 819-825) developed a method for estimating maximized lambda4, the
greatest split-half reliability coefficient among all possible split halves
for a scale. The method is quite tedious to do by hand, and the authors
And if I may muddy the waters even more, what is the difference between
biostatistics and biometry?
Dick
___
Richard G. Seymann, Ph.D.
Professor of Statistics
Director of Academic Assessment
Director of the Westover Honors Program
Lynchburg College,
At 01:49 PM 11/19/01 -0500, Wuensch, Karl L wrote:
Callender and Osburn (Educational and Psychological Measurement,
1977, 37, 819-825) developed a method for estimating maximized lambda4, the
greatest split-half reliability coefficient among all possible split halves
for a scale. The
Dennis asked how do we know what a test's true reliability is?
Osburn knew because he simulated true-score covariance matrices and
from these obtained observed score covariance matrices as a function of the
true-score matrices and hypothetical values of reliability. More details
are in
RS == Richard Seymann [EMAIL PROTECTED] writes:
RS And if I may muddy the waters even more, what is the
RS difference between biostatistics and biometry? Dick
Depends on which definition of biometry you are using. One
definition used to be an older name for what is now biostatistics
Problem posed me by a student: ten persons (A through J) and ten
envelopes containing cards marked with letters A through J. (Each
letter is in one and only one envelope.)
The random variable x is the number of people who get the right
envelope when the envelopes are handed out randomly.
Stan Brown wrote:
Problem posed me by a student: ten persons (A through J) and ten
envelopes containing cards marked with letters A through J. (Each
letter is in one and only one envelope.)
The random variable x is the number of people who get the right
envelope when the envelopes are
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