Re: Excel vs Quattro Pro

2002-01-09 Thread A.J. Rossini

>>>>> "GG" == Gus Gassmann <[EMAIL PROTECTED]> writes:

>> There are plenty of reasonable FREE packages, ViSta and R come
>> to mind.

GG> That's all fine and good, but I can see kenmlin's point. Yes,
GG> excel is lousy at statistics, yes, their attitude towards
GG> errors in the software stinks, and, yes, there are real
GG> statistical packages available for students at little or no

GG> cost. However, in a business school I have absolutely no
GG> illusion that any of my students will ever be
GG> statisticians. They will be consumers of statistics, and they
GG> will occasionally produce simple statistics themselves. I
GG> teach the use of minitab in my classes, by I feel that I would
GG> be remiss if I didn't also teach them how to use excel (and
GG> warn them about potential pitfalls), since there is no reason
GG> to suspect that they will have acess to a statistical package
GG> once they are out in the workforce.

I've got no problems, generally with excel.  Just don't make me use
it, since there is no reasonable way to provide an audit trail of what
was done.  However, part of the reason for suggesting the two packages
is that they CAN use excel files.

Note that I've just suggested 2 cross-platform, freely available
alternatives.  There is no reason NOT to have access to either product
in the workplace (since both will work on macs, windows, (and while
vista's support isn't as good here) unix).

So now, the question becomes, why bother with minitab, since you could
provide training on software that they can have available (Excel, and
R or ViSta).

best,
-tony

-- 
A.J. RossiniRsrch. Asst. Prof. of Biostatistics
U. of Washington Biostatistics  [EMAIL PROTECTED]
FHCRC/SCHARP/HIV Vaccine Trials Net [EMAIL PROTECTED]
-- http://software.biostat.washington.edu/ --
FHCRC: M-W: 206-667-7025 (fax=4812)|Voicemail is pretty sketchy/use Email
UW:   T-Th: 206-543-1044 (fax=3286)|Change last 4 digits of phone to FAX
Rosen: (Mullins' Lab) Fridays, and I'm unreachable except by email.


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Re: Excel vs Quattro Pro

2002-01-09 Thread A.J. Rossini

>>>>> "k" == kenmlin  <[EMAIL PROTECTED]> writes:

k> Sorry I pissed everyone off.  My argument is more relevant to
k> teaching introductory statistics course to non-stat majors who
k> might not have access to stat packages at their own department
k> or when they leave school.  I felt that teaching Excel is
k> beneficial in a sense that they might actually be able to use
k> what they learned since Excel's more readily available.  I also
k> found that I had next to no time to cover the software while I
k> was teaching intro stat course.

k> I understand that it's very important for many of you to teach
k> stat package because it's what you are familiar with and you
k> have access to it.  (The stat dept I belonged to didn't have
k> the budget for a decent computer lab so I always had to come up
k> with ways to work around with the lack of resources.) I
k> apologize for being practical.  I myself is now a SAS
k> professional but I think differently if I am teaching.

There are plenty of reasonable FREE packages, ViSta and R come to
mind.  

ViSta is click-and-point, with a number of nice features; R needs a
bit (MUCH!) more hand-holding, but pays off with the ability to do
much, much more when understood.

best,
-tony

-- 
A.J. RossiniRsrch. Asst. Prof. of Biostatistics
U. of Washington Biostatistics  [EMAIL PROTECTED]
FHCRC/SCHARP/HIV Vaccine Trials Net [EMAIL PROTECTED]
-- http://software.biostat.washington.edu/ --
FHCRC: M-W: 206-667-7025 (fax=4812)|Voicemail is pretty sketchy/use Email
UW:   T-Th: 206-543-1044 (fax=3286)|Change last 4 digits of phone to FAX
Rosen: (Mullins' Lab) Fridays, and I'm unreachable except by email.


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Re: Excel vs Quattro Pro

2002-01-07 Thread A.J. Rossini

>>>>> "DR" == Dennis Roberts <[EMAIL PROTECTED]> writes:

DR> i don't know the answer to this but ... i have a general
DR> question with regards to using spreadsheets for stat analysis


DR> why? ... why do we not help our students and encourage our
DR> students to use tools designed for a task ... rather than
DR> substituting something that may just barely get us by?


DR> we don't ask stat packages to do what spreadsheets were
DR> designed to do ... why the reverse?

Let's think about this in another way.  Spreadsheets do form a nice
means for thinking about datasets.  In fact, a good number of "decent"
statistical packages can interact with spreadsheets, or provide a
spreadsheet-style interface.  

There are a number of rather useful EDA tools that spreadsheets like
Excel provide (easily programmable in R or XLispStat, to name my two
favorite statistics languages).

So, what's missing in spreadsheets?  the ability to designate dataset
structures for statistical modeling with the same flexibility as a
decent statistical language (I'm thinking generalized linear models
(not general linear models!), correlated regression, event-time
regression analysis; robust numerical computations at the same
level, and a large set of tools.

However, more critical is, "what's missing in statistical languages?",
and I think that the answer are tools to help novices ramp up
"properly".  

I'll leave the definition of "properly" open for debate.

-- 
A.J. RossiniRsrch. Asst. Prof. of Biostatistics
U. of Washington Biostatistics  [EMAIL PROTECTED]
FHCRC/SCHARP/HIV Vaccine Trials Net [EMAIL PROTECTED]
-- http://software.biostat.washington.edu/ --
FHCRC: M-W: 206-667-7025 (fax=4812)|Voicemail is pretty sketchy/use Email
UW:   T-Th: 206-543-1044 (fax=3286)|Change last 4 digits of phone to FAX
Rosen: (Mullins' Lab) Fridays, and I'm unreachable except by email.


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Re: biostatistics careers

2001-11-19 Thread A.J. Rossini

>>>>> "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 (and
what might again become biometry, according to how some in the field
want to rename it again to make it more relevant to measurement and
design).  That's a nice murky response, which shows how our language
is ill-defined.

There are other definitions, which have little to do with statistics. 

best,
-tony

-- 
A.J. RossiniRsrch. Asst. Prof. of Biostatistics
U. of Washington Biostatistics  [EMAIL PROTECTED]
FHCRC/SCHARP/HIV Vaccine Trials Net [EMAIL PROTECTED]
-- http://software.biostat.washington.edu/ --
FHCRC: M-W: 206-667-7025 (fax=4812)|Voicemail is pretty sketchy/use Email
UW:   T-Th: 206-543-1044 (fax=3286)|Change last 4 digits of phone to FAX
Rosen: (Mullins' Lab) Fridays, and I'm unreachable except by email.


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Re: biostatistics careers

2001-11-19 Thread A.J. Rossini

>>>>> "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 have only a vague idea.
>> 
>> 
BW> There was a thread on "biostatistics versus statistics" a
BW> couple years ago, I think, but I was unable to find it at
BW> google groups.  Maybe someone out there saved some of it.
>> 
>> 
>> But it's much easier than that.  Biostatistics is simply
>> statistics (design, descriptive, and inferential) applied to
>> medical, basic biology, and public health problems.

DR> well, one difference in bio stat is a strong emphasis on
DR> probability sorts of problems ...

Hah!  So you think...




-- 
A.J. RossiniRsrch. Asst. Prof. of Biostatistics
U. of Washington Biostatistics  [EMAIL PROTECTED]
FHCRC/SCHARP/HIV Vaccine Trials Net [EMAIL PROTECTED]
-- http://software.biostat.washington.edu/ --
FHCRC: M-W: 206-667-7025 (fax=4812)|Voicemail is pretty sketchy/use Email
UW:   T-Th: 206-543-1044 (fax=3286)|Change last 4 digits of phone to FAX
Rosen: (Mullins' Lab) Fridays, and I'm unreachable except by email.


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Re: biostatistics careers

2001-11-19 Thread A.J. Rossini

>>>>> "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, but I was unable to find it at
BW> google groups.  Maybe someone out there saved some of it.


But it's much easier than that.  Biostatistics is simply statistics
(design, descriptive, and inferential) applied to medical, basic
biology, and public health problems.

So while a decent biostatistician need only concern themselves with
knowing all of statistics (which of course requires knowledge of most
of computer science and mathematics), as well as one or two of the
above scientific areas, a truly good one will know most science and
study related to medicine (which of course should include
biochemistry, economics, clinical trials, etc).

I'm only being slightly facetious.  I've come across the need to know
parts of nearly all of the areas mentioned above in my work, both to
communicate with as well as handle data analyses appropriately for
clients and colleagues.

best,
-tony

-- 
A.J. RossiniRsrch. Asst. Prof. of Biostatistics
U. of Washington Biostatistics  [EMAIL PROTECTED]
FHCRC/SCHARP/HIV Vaccine Trials Net [EMAIL PROTECTED]
-- http://software.biostat.washington.edu/ --
FHCRC: M-W: 206-667-7025 (fax=4812)|Voicemail is pretty sketchy/use Email
UW:   T-Th: 206-543-1044 (fax=3286)|Change last 4 digits of phone to FAX
Rosen: (Mullins' Lab) Fridays, and I'm unreachable except by email.


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Re: Stat pkg for old Mac

2000-10-27 Thread A.J. Rossini


There is always XLispStat, and the graphical front-ends, ViSta and
ARC.

Why pay more when there is perfectly adequate and exceptional software
available?

best,
-tony

-- 
A.J. RossiniRsrch. Asst. Prof. of Biostatistics
BlindGlobe Networks (home/default)  [EMAIL PROTECTED]  
UW Biostat/Center for AIDS Research [EMAIL PROTECTED]
FHCRC/SCHARP/HIV Vaccine Trials Net [EMAIL PROTECTED]

FHCRC: M/Tu: 206-667-7025 (fax=4812) | Voicemail is pretty sketchy
CFAR:   W/F: 206-731-3647 (fax=3694) | Email is far better than phone
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Re: job issues. stat and computer? (fwd)

2000-09-27 Thread A.J. Rossini

>>>>> "BH" == Bob Hayden <[EMAIL PROTECTED]> writes:

BH> - Forwarded message from d.u. - Hello, I was wondering
BH> the job prospects for a master's degree in stat, and whether
BH> jobwise it is highly desirable to also do some computer
BH> science (e.g., programming languages, data structures etc).
BH> I'd appreciate any suggestions. Thank you!
BH> - End of forwarded message from d.u. -

BH> Many of these people end up as SAS programmers.  Lots of
BH> experience wtih SAS may be more valuable than abstract
BH> computer science.
 
And for those that don't learn SAS, the biotech industry really likes
them for playing around with large data sets (the CS/Stat cross is
quite useful for genomics/proteonics, and similar genetic-level data
handling/analysis...).

-- 
A.J. RossiniRsrch. Asst. Prof. of Biostatistics
BlindGlobe Networks (home/default)  [EMAIL PROTECTED]  
UW Biostat/Center for AIDS Research [EMAIL PROTECTED]
FHCRC/SCHARP/HIV Vaccine Trials Net [EMAIL PROTECTED]

FHCRC: M/Tu: 206-667-7025 (fax=4812) | Voicemail is pretty sketchy
CFAR:   W/F: 206-731-3647 (fax=3694) | Email is far better than phone
UW:Th/F: 206-543-1044 (fax=3286) | Change last 4 digits of phone for fax


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Re: free stat package

2000-06-30 Thread A.J. Rossini


and why not use R or XLispStat/ViSta, which will do everything and
more, under multiple OS's, and are free as well?

Might as well learn how to program... (what's the old adage, "give a
man a statistical analysis, he'll think for a day, give him the
ability to program a statistical analysis, he'll work for years"?)

best,
-tony

-- 
A.J. Rossini   Research Assistant Professor of Biostatistics 
Biostatistics/Univ. of Washington  (Th) Box 357232   206-543-1044 (3286=fax)
Center for AIDS Research/HMC/UW   (M/F) Box 359931   206-731-3647 (3693=fax)
VTN/SCHARP/FHCRC (Tu/W) Box 358080   206-667-7025 (4812=fax)
rossini@(biostat.washington.edu|u.washington.edu|scharp.org)
http://www.biostat.washington.edu/~rossini



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Re: Help! Survival curve plot (Kaplan-Meier) with absolute numbers - which software?

2000-03-23 Thread A.J. Rossini

>>>>> "FEH" == Frank E Harrell <[EMAIL PROTECTED]> writes:

FEH> The survplot function in the public-domain S-Plus library

Frank -

To nit-pick, the library is not public-domain, but a modified version
of the GPL, that you've licensed it under.  (I just checked again).
So, it's sort of "open-source", to use the latest software licensing
buzzwords... 

If it had been public domain (or if you'd remove the disclaimer), I
would've at least evaluated it and possibly ported it to R if it was
useful for me (probably likely), instead of considering it (maybe
unfairly) a pretty useless piece of software...

best,
-tony

-- 
A.J. Rossini   Research Assistant Professor of Biostatistics 
Biostatistics/Univ. of Washington  (Th) Box 357232   206-543-1044 (3286=fax)
Center for AIDS Research/HMC/UW   (M/F) Box 359931   206-731-3647 (3693=fax)
VTN/SCHARP/FHCRC (Tu/W) Box 358080   206-667-7025 (4812=fax)
rossini@(biostat.washington.edu|u.washington.edu|hivnet.fhcrc.org)
http://www.biostat.washington.edu/~rossini



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