Herman Rubin wrote:
>>>The OED cites the following use of metric as a noun:
>>>1921 Proc. R. Soc. A. XCIX. 104 "In the non-Euclidean
>>>geometry of Riemann, the metric is defined by certain quantities . .
>
>>A good example of bad usage: *what* metric, *what* quantities?
>>The reader should not
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Joe Galenko
Sent: Friday, September 21, 2001 12:30 PM
To: [EMAIL PROTECTED]
Subject: Re: what type of distribution on this sampling
Just out of curiousity, I'd like to know what kind of population you coul
Hi
I have a problem in linear algebra that is;
If T be a linear transformation matrix(squared matrix)
and inv(T') be the inverse of transpose of T,
is inv(T') a linear transformation matrix too???
Thanks for your help
ASGHAR AKBARI
==
Right, I meant to say _approximately_ Normal. If you're writing it down
mathematically then the sample mean is only Normal if the larger
population is also Normal. But in practice, nothing is ever exactly
Normal anyway, so in that sense it's just a matter of when have you have
enough to get a g
Joe Galenko wrote:
> Just out of curiousity, I'd like to know what kind of population you could
> have such that a sample mean with N = 200 wouldn't be approximately
> Normally distributed. That would have to be a very, very strange
> distribution indeed.
You can construct them easily as Bernou
At 02:12 PM 9/21/01 -0500, Jon Cryer wrote:
>I wouldn't call bootstrapping "sampling from a population."
>Would you?
>
>Jon Cryer
however, we should perhaps not make too lightly of this method ... if
bootstrapping or resampling ... will produce accurate estimates of standard
errors (for example
At 02:12 PM 9/21/01 -0500, Jon Cryer wrote:
>I wouldn't call bootstrapping "sampling from a population."
>Would you?
well, getting the first boot ... to do the strapping ... might be ... but,
after that ... then REsampling from the first SAMPLE (boot) ... would be a
better way to describe it
s
At 06:14 PM 9/21/01 +, Jerry Dallal wrote:
>I wrote:
>
> > Does anybody really care about the proportions of different colors
> > in bags of M&Ms?
>
>because I surely didn't, but perhaps I should. Since the % blues
>differ among plain and peanut (10 v 30, says WBW) there's probably a
>good me
At 12:47 PM 9/21/01 -0400, Joe Galenko wrote:
>The mean of a random sample of size 81 from a population of size 1 billion
>is going to be Normally distributed regardless of the distribution of the
>overall population (i.e., the 1 billion).
i don't think so .. check out the central limit theorem
I wouldn't call bootstrapping "sampling from a population."
Would you?
Jon Cryer
At 06:03 PM 9/21/01 GMT, you wrote:
>Jon Cryer wrote:
>>
>> But it would be bad statistics to sample with replacement.
>
>Whew! saves me from having to learn about all that bootstrap
>stuff! :-)
>
>
>
I wrote:
> Does anybody really care about the proportions of different colors
> in bags of M&Ms?
because I surely didn't, but perhaps I should. Since the % blues
differ among plain and peanut (10 v 30, says WBW) there's probably a
good medical/epidemiology exercise to be had by relabeling
plai
Joe Galenko wrote:
> The mean of a random sample of size 81 from a population of size 1 billion
> is going to be Normally distributed regardless of the distribution of the
> overall population (i.e., the 1 billion). Oftentimes the magic number of
> 30 is used to say that the mean will have a Nor
Jon Cryer wrote:
>
> But it would be bad statistics to sample with replacement.
Whew! saves me from having to learn about all that bootstrap
stuff! :-)
=
Instructions for joining and leaving this list and remarks about
the p
seems to me that if you are talking about, for example, generating a
sampling distribution of means, ... then each and every SRS is assumed to
be randomly and INDEPENDENTLY drawn from said population ... thus, sampling
with replacement is assumed
if not, each NEXT sample is not being drawn f
The mean of a random sample of size 81 from a population of size 1 billion
is going to be Normally distributed regardless of the distribution of the
overall population (i.e., the 1 billion). Oftentimes the magic number of
30 is used to say that the mean will have a Normal distribution, although
> >"@Home" wrote:
> >> >
> >> > Is there any downloadable freeware that can generate let's say 2000 random
> >> > samples of size n=100 from a population of 100 numbers.
> >> >
> >>
> >and Randy Poe responded:
> >> Um.
> >>
> >> A sample of 100 from a population of 100 is going to
> >> give you t
All the info is at
http://www.m-ms.com/us/about/products/index.jsp
for each of the different types of m&m's. Just click the one in which you are
interested.
you wrote
Date: Thu, 20 Sep 2001 08:36:43 -0400
From: "Rob MacTurk" <[EMAIL PROTECTED]>
Subject: Re: for students (biology
But it would be bad statistics to sample with replacement.
Jon Cryer
At 08:35 AM 9/21/01 -0300, you wrote:
>"@Home" wrote:
>> >
>> > Is there any downloadable freeware that can generate let's say 2000 random
>> > samples of size n=100 from a population of 100 numbers.
>> >
>>
>and Randy Poe resp
This would have been of more interest if it had been published in
August.
=
Instructions for joining and leaving this list and remarks about
the problem of INAPPROPRIATE MESSAGES are available at
http://jse.stat.n
Rich Ulrich wrote:
> Robert waffles by saying 'most' purposes, so I have to
> find it easy to agree. When might you *not* treat a uniform,
> N=20 as normal? - perhaps when the R^2 is too high
> (above .90)?
Anything involving extreme-value estimation, for a start.
"@Home" wrote:
> >
> > Is there any downloadable freeware that can generate let's say 2000 random
> > samples of size n=100 from a population of 100 numbers.
> >
>
and Randy Poe responded:
> Um.
>
> A sample of 100 from a population of 100 is going to
> give you the entire population.
D
Jerry Dallal wrote:
>
> > You can have them count the colors of candies in bags of M&Ms. The M&M
> > web site has the expected proportions published so they can do a
> > ChiSquare test against those proportions.
>
> Does anybody really care about the proportions of different colors
> in bags o
Dear newsgroup reader,
within my thesis there is a survey about maps and users expectations.
Please take part at http://www.domestic.at/uniwien
Thanks in advance,
Isabella Bayer
[EMAIL PROTECTED]
Department of Geography and Regional Research, Cartography and
Geoinformation
University of Vienna,
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