Re: Excel vs. Specialized stats packages (was: Excel vs Quattro Pro)

2002-01-08 Thread Art Kendall

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Excel is a microsoft product.  Microsoft's approach is to take existing concepts
and re-package them. (e.g., MSDOS followed most of the conventions of RT-11 and
RSX-11, Windows used a lot of the conventions of Mosaic and DecWindows) It did
not introduce most of the concepts in Excel.  NPCalc was using a visual
spreadsheet before  Microsoft or PC's existed.  VisiCalc introduced the visual
spreadsheet to PC's.

James Huntington wrote:

> 
> It doesn't, but my point was that a stats package is based around a
> spreadsheet (most of which plagiarize Excel),
> 

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Re: Excel vs. Specialized stats packages (was: Excel vs Quattro Pro)

2002-01-08 Thread James Huntington

"Dennis Roberts" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> >This is an interesting discussion, but the line between a spreadsheet and
> >stats package is not so clear-cut these days. If you look at how the
major
> >stats packages have developed over the last decade, you can see how they
> >have copied more and more features from Excel. In fact almost all stats
> >packages now boast of containing a fully featured built-in spreadsheet
for
> >data entry.
>
> certainly minitab makes no such claim ... their worksheet is NOT a
spreadsheet

The Minitab worksheet is for all intents & purposes a spreadsheet, albeit a
"structured" spreadsheet to accept a dataset and variables in columnar
format.


> >Looking at the situation from another angle, why can't a spreadsheet be
used
> >for statistical analysis? Granted, some of Excel's built-in statistical
> >functions leave a lot to be desired and should be used with care. But the
> >Excel spreadsheet package is still head-and-shoulders above any other
> >similar product in terms of ease of use, data entry and collection,
> >presentation, programming interfaces, and it's excellent integration with
> >the other Office applications.
>
> so, i am not sure this has anything to do with statistical analysis

It doesn't, but my point was that a stats package is based around a
spreadsheet (most of which plagiarize Excel), so why can't a good
spreadsheet package (like Excel) be the basis of a stats package? There is
no reason why it can't!


> >A reliable low-cost statistics add-on for Excel can easily bypass these
> >problems.
>
> unfortunately though, it does not exist
>
> here are the major problems with using excel as a stat package including
> 3rd party plugins (off the top of my head)
>
> 1. poor data MANAGEMENT capabilities
> 2. poor and HIGHLY LIMITED graphics
> 3. highly limited set of routines to select from
> 4. inability to work with any/many random generation functions (for
> distributions)
> 5. limited access to important statistical tables

The needs of an individual user vary and I think that is never considered in
these discussions. Most of the above does not apply to the vast majority of
"less statistically minded" people wanting a statistics package that covers
all the basic "undergraduate level" stats functions that they need in
education or business.

As with everything, you get what you pay for, and the low US$100 price of an
Excel add-on stats package compares very well against a starting price of
over US$500 for a "proper" stats package which includes nothing extra that
such a user might need. And this is just for a comparable package, not for
the advanced statistical modules which can cost thousands of $.

Points 1, 4 and 5 and not a concern for most users. Excel includes more than
enough data management tools, including PivotTables, although it does lack
the Stack/Split functions of stats packages. Points 4 & 5 are not applicable
to most users, only to advanced statistical researchers or for educational
purposes.

Point 3 depends on what kind of statistical analysis you require and is the
same with any software. Excel add-ons do not cater for everything, but the
wealth of add-ons for statistics, forecasting, and SPC cover all the areas
where statistics are needed in business.

Finally, point 2 is debatable considering the lack of decent graphics and
still ASCII output of many of the older-generation stats packages. Granted,
the formatting of Excel's charts by default is not very helpful, and this is
an area that needs some attention. But until a few years ago, Minitab only
included a graphical histogram & bell-curve after a user developed a macro
to do it, which Minitab then incorporated into the shipped version!


> from discussions like this on several lists, it is clear that no argument
> pro or con will sway those who have opted for or agin using excel as the
> statistical analysis tool
>
> but, each side keeps trying

The reason I responded was to bring some "balance" to the discussion, which
I think is always lacking in these discussions of Excel vs. Stats packages.
I believe those against Excel, the statisticians, will never be swayed and
nor should they because Excel does not offer the kind of advanced
statistical research that some need.

But equally, those now using Excel should be aware of the options available
for statistics within Excel and the advantages that brings.


_

James Huntington,
..Analyse-it Software, Ltd.
.
Analyse-it! accurate low-cost statistical software for
Microsoft Excel. For more information & to download a
free evaluation, visit us: http://www.analyse-it.com





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Re: Excel vs. Specialized stats packages (was: Excel vs Quattro Pro)

2002-01-08 Thread Art Kendall

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James Huntington wrote:

> Excel spreadsheet package is still head-and-shoulders above any other
> similar product in terms of ease of use, data entry and collection,
> presentation, programming interfaces, and it's excellent integration with
> the other Office applications.
>

IMHO. Excel has market share but it is third in the three major spreadsheets for
ease of use etc..
Quattro Pro, Lotus, Excel.

Spreadsheets are not designed to carry value labels, distinct missing values,
level of measurement, etc in the data definition


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Re: Excel vs. Specialized stats packages (was: Excel vs Quattro Pro)

2002-01-08 Thread Dennis Roberts


>rse?
>
>This is an interesting discussion, but the line between a spreadsheet and
>stats package is not so clear-cut these days. If you look at how the major
>stats packages have developed over the last decade, you can see how they
>have copied more and more features from Excel. In fact almost all stats
>packages now boast of containing a fully featured built-in spreadsheet for
>data entry.

certainly minitab makes no such claim ... their worksheet is NOT a spreadsheet




>Looking at the situation from another angle, why can't a spreadsheet be used
>for statistical analysis? Granted, some of Excel's built-in statistical
>functions leave a lot to be desired and should be used with care. But the
>Excel spreadsheet package is still head-and-shoulders above any other
>similar product in terms of ease of use, data entry and collection,
>presentation, programming interfaces, and it's excellent integration with
>the other Office applications.

so, i am not sure this has anything to do with statistical analysis




>So if the basic spreadsheet component is sound, and almost all computer and
>non-computer literate users can use Excel without problems, why not just
>extend Excel's statistical capabilities with reliable accurate statistical
>add-ons? Many exist, and we develop a product called "Analyse-it" for this
>very purpose.

i have looked at analyse-it and one other plug in (plus what comes with 
excel) ... and, there just is no comparision between them (well there is 
... and it is not very good) and most of the popular stat packages

>A reliable low-cost statistics add-on for Excel can easily bypass these
>problems.

unfortunately though, it does not exist

here are the major problems with using excel as a stat package including 
3rd party plugins (off the top of my head)

1. poor data MANAGEMENT capabilities
2. poor and HIGHLY LIMITED graphics
3. highly limited set of routines to select from
4. inability to work with any/many random generation functions (for 
distributions)
5. limited access to important statistical tables

from discussions like this on several lists, it is clear that no argument 
pro or con will sway those who have opted for or agin using excel as the 
statistical analysis tool

but, each side keeps trying

this kind of discussion, though interesting, pales in comparision to a 
discussion we should be having about the over reliance and importance we 
place in statistical analysis in the first place ... and even though i have 
been in this sort of enterprise for more years than you can shake a stick 
at ... the reality is that typical analysis that we do has limited 
practical uses and benefits

the entire area of statistical significance testing is just one case in point



>_
>
>James Huntington,
>..Analyse-it Software, Ltd.
>.
>Analyse-it! accurate low-cost statistical software for
>Microsoft Excel. For more information & to download a
>free evaluation, visit us: http://www.analyse-it.com
>
>
>
>
>=
>Instructions for joining and leaving this list, remarks about the
>problem of INAPPROPRIATE MESSAGES, and archives are available at
>   http://jse.stat.ncsu.edu/
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_
dennis roberts, educational psychology, penn state university
208 cedar, AC 8148632401, mailto:[EMAIL PROTECTED]
http://roberts.ed.psu.edu/users/droberts/drober~1.htm



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Excel vs. Specialized stats packages (was: Excel vs Quattro Pro)

2002-01-08 Thread James Huntington

"Dennis Roberts" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> i don't know the answer to this but ... i have a general question with
> regards to using spreadsheets for stat analysis
>
> why? ... why do we not help our students and encourage our students to use
> tools designed for a task ... rather than substituting something that may
> just barely get us by?
>
> we don't ask stat packages to do what spreadsheets were designed to do ...
> why the reverse?

This is an interesting discussion, but the line between a spreadsheet and
stats package is not so clear-cut these days. If you look at how the major
stats packages have developed over the last decade, you can see how they
have copied more and more features from Excel. In fact almost all stats
packages now boast of containing a fully featured built-in spreadsheet for
data entry.



Looking at the situation from another angle, why can't a spreadsheet be used
for statistical analysis? Granted, some of Excel's built-in statistical
functions leave a lot to be desired and should be used with care. But the
Excel spreadsheet package is still head-and-shoulders above any other
similar product in terms of ease of use, data entry and collection,
presentation, programming interfaces, and it's excellent integration with
the other Office applications.



So if the basic spreadsheet component is sound, and almost all computer and
non-computer literate users can use Excel without problems, why not just
extend Excel's statistical capabilities with reliable accurate statistical
add-ons? Many exist, and we develop a product called "Analyse-it" for this
very purpose.



I think the group should also remember than versions of SAS and SPSS from
only a few years ago suffered from accuracy problems. McCullough published
details of the problems in his articles for "The American Statistician" in
1999. Of course, the product developers have now fixed the problems which
customers no doubt paid for in later upgrades. And yet these packages are
still seen as the gold standard, taken for granted as accurate, even though
these accuracy problems lurked for possibly 10 or 15 years until highlighted
by McCullough!



I am not saying the problems of Excel, a tool so widely used and taken for
granted by most users, should not have its problems highlighted. But, to say
that the whole Excel package should be dismissed in favour of a stats
package which costs more, basically is a copy of Excel's spreadsheet
functionality, and then has accuracy problems of it's own, is a little
blinkered.



A reliable low-cost statistics add-on for Excel can easily bypass these
problems.



_

James Huntington,
..Analyse-it Software, Ltd.
.
Analyse-it! accurate low-cost statistical software for
Microsoft Excel. For more information & to download a
free evaluation, visit us: http://www.analyse-it.com




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