Statalist The Stata Listserver


[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

re: st: Re: Anova


From   David Airey <[email protected]>
To   [email protected]
Subject   re: st: Re: Anova
Date   Fri, 8 Dec 2006 22:55:47 -0600

.

I have an experiment where a component is stressed (nominally to the same
level) and the stress measured a constant time afterwards for 5 different
materials. I wanted to investigate the effect of material on the difference
in stress giving me the simple model:
anova diff system
The problem is that the initial nominal stress is not constant and may have
en effect on diff.
How can do I formulate this model? I tried
anova diff f1, continuous(f1) but f1 now enters the model as a both a main
factor and a component of diff.
Are you measuring stress on two or more occasions, or just the once? It's also hard to understand exactly what you mean when you say the stress was to the same level in the first sentence, but then you say it's not constant later on.
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/




© Copyright 1996–2024 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index