Don't know as I can help much, but a few questions occur to mind.
It strikes me that there may be some constraints on the system that you
haven't mentioned. For example:
1. Are features L and R mutually exclusive, so that if L is found
at position i, R cannot be found at that positio
On Thu, 15 Jun 2000, sahar salah wrote:
> I'm a researcher at Cairo University in the field of computer science.
> Due to my PhD I'm preparing a questionnaire. But the population is
> very large. I classified it into 35 categories. All I need, is to
> determine the sample size. Is it prop
I've not seen any particularly helpful responses to this post,
so here's my attempt:
On Thu, 15 Jun 2000 [EMAIL PROTECTED] wrote:
> Hello, I am a 16 year old student and a beginner to statistics.
> I'm lost.
I'll assume you have access to some standard elementary statistics
textbook. If this
dz wrote:
>
> Hi, anybody knows how to caculate the variance of x/y? where x and y are two
> independent variables with normal dis n(a1,b1) and
> n(a2,b2) respectively.
>
> Thank you.
This was posted by me only about two weeks ago.
|>
|> Hi Everyone.
|>
|> I've calculated the mean and vari
as many of us get (all to) closer and closer to retirement ... and,
generally could kick ourselves more and more for not paying more serious
attention to this matter earlier in our careers ... we face the fact that
there are a limited number of years to make your money work for you ...
before you
Due to my PHD I'm preparing a
questionnaire. But the popular is very large.I classified it into 35
categories. All I need, is to determine the sample size. is it proportional to
the popular size? How can I determine that sample size?Please I need your
help.sahar salah
subscribe EDSTAT-L sahar
attia
I don't have my books available at the moment.
Does anyone know of software or web page calculators where I can input
1) expected proportion (e.g., .5 or .8)
2) a total number of cases (e.g., 1000, 750, 500)
3) a number of PSUs (e.g., 300 to 75 by -25)
4) a confidence level .95
and get an estima
Title: Re: how to caculate the variance of
x/y
@article{hink:1969,
Journal = {Biomtrka},
Volume = 56,
Pages = {635--639},
Author = {Hinkley, D. V.},
Title = {On the Ratio of Two Correlated Normal
Random Variables (Corr:
{V}57 P683)},
Year = 1969
}
@article{sha
Hi, anybody knows how to caculate the variance of x/y? where x and y are two
independent variables with normal dis n(a1,b1) and
n(a2,b2) respectively.
Thank you.
===
This list is open to everyone. Occasionally, less th
Edmond--
You may want to use the REGRESSION program in Excel (WITH CAUTION).
That way you can create your own models to do what YOU WANT TO DO.
You might want to contact a statistician to help you use REGRESSION
models. You don't need to use some of the Pre-Computer algorithms if
you know who
1-b*exp(-c*t) is negative only if b*exp(-c*t) > 1, which implies
log(b) > c*t, I think. Is this a reasonable circumstance in terms of
the theory that led to the Richards growth curve?
You say this occurs frequently in your data; since b and c are
presumably constants for a given data set
Hello all,
I am trying to fit some data using the NLINFIT of MATLAB and using SAS.
I am trying to fit the well know RICHARDS growth curve.
It looks like y=a*(1-b*exp(-c*t))^d where we want to estimate the
parameters a,b,c,and d. Here t is my input and is age squared while y
is the weight of
unsubscribe edstat-l Greg Kline
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people send inappropriate messages. Please DO NOT COMPLAIN TO
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Any help, hints, direction etc. on this appreciated:
I have a vector of measurements F, and two feature models L and R which
give the pdf of a measurement Fi for that model i.e. P(Fi|Li) and
P(Fi|Ri). Denoting the probability that there is a feature L at position
i in the vector as P(Li) and simi
If some of your independent (predictor) variables are categorical, then the
dots and zeros are not a problem but merely a refelction of what would be
redundant parameters.
At 01:00 AM 6/15/00 +0100, HAideren wrote:
>Hi,
>
>I have run a MANOVA and in the 'Parameter Estimates' section of the result
People who do not know "what it means" should not be doing the
statistics.
--
Charles Madewell
Reliability/Test Engineering, Systems/Materials Failure Analysis.
Statistical Analysis, Design of Experiments,
Regression/Modeling/Prediction.
In article <8i6fnk$d29$[EMAIL PROTECTED]>,
"Rudolph
Dear SirI'm a researcher at Cairo
University in the field of computer science.Due to my PHD I'm
preparing a questionnaire. But the popular is very large.I classified
it into 35 categories. All I need, is to determine the sample size. is it
proportional to
Hello, I am a 16 year old student and a beginner to statistics.
I'm lost.
Currently I only have Microsoft Excel 97. And I would like to know the
differences between the following ANOVA tests (in Excel):
ANOVA Single Factor
ANOVA Two-Factors with replication
ANOVA Two-Factors without replication
unsubscribe edstat-l Randall Aitchison
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