Measurement Error & ANOVA ??

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1 total messages Started by David Abercrombie Thu, 06 Aug 1992 04:07

#161

Author: David Abercrombie
Date: Thu, 06 Aug 1992 04:07

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Is it possible to account for measurement error when
performing an ANOVA test?  How?

I am planning an experiment with chemical concentrations
measured by a laboratory as the continuous-level variable.
I plan to use two-way, mixed-model, ANOVA to analyze the
results (two fixed effect levels, three random effect
levels, equal numbers of scores per cell).

I can independently estimate the measurement error variance
due to sample collection and laboratory analysis.  But how
can I use this information in my ANOVA?

BTW, I have seen several articles on accounting for
measurement error in the calculation of intervals (listed
below).  Is there a similar approach for ANOVA?

In "Journal of Quality Technology":

	"Tolerance Limits and Bounds for Proportions Based 
	on Data Subject to Measurement Error." Robert Mee. 
	Vol 16, No. 2, pp. 74, April 1984.

	"Removing the Effects of Measurement Error in Constructing 
	Statistical Tolerance Intervals." John L. Jaech. 
	Vol 16, No. 2, pp. 69, April 1984.

	"Removing Measurement Error in Assessing Conformance
	to Specifications."  Gerald J. Hahn.
	Vol. 14, No. 3, pp. 117, July 1982.

Thanks!
-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dave Abercrombie                abe@lyra.infoserv.com
Oakland, CA                           -- or --
(510) 652-7131                     abe@netcom.com

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