Re: [Phys-l] Vary-One-Variable Protocols (was Psychologists Respond etc...)

[E Muehleisen <ironmill@hotmail.com>]

A powerful tool in the QC arsenal for analyzing the performance of production systems is called the Taguchi Method. It is a multivariable analysis technique that bypasses the single variable technique by reducing the number of experiments whilst also showing variable interdependence. This method is especially strong since it can show how variables interact.

E.C. Muehleisen

Too much of a good thing is wonderful!

> Date: Mon, 19 Nov 2007 18:46:57 -0600
> To: phys-l@carnot.physics.buffalo.edu
> From: betwys1@sbcglobal.net
> Subject: [Phys-l] Vary-One-Variable Protocols (was Psychologists Respond	etc...)
>
> At 02:48 PM 11/19/2007, Richard H., you wrote:
>
> > ... we not only reemphasize the importance of randomized,
> > controlled experimental tests of competing instructional procedures,
> > but also indicate that altering one variable at a time is an
> > essential feature of a properly controlled experiment. ...
>
> The  familiar "vary one variable" approach to experiment,
>   is now in particular situations,  substituted by
>   multivariate  experimentation.
>
> If all confounding factors cannot be specified in advance,
>   methods of varying several factors at a time can extract
>   useful experimental responses due to these factors, from other,
> perhaps unknown or unrecognized variables.
>
> I sometimes think of this as the spatial or parallel  approach to
> randomizing the protocol, as opposed to the serial randomization
> which is familiar.
>
>
> Brian Whatcott    Altus OK    Eureka!  
>
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