Werner Wittmann <[EMAIL PROTECTED]> wrote:
: inverting the
: correlation matrix to get the effects was too complicated to compute by
: hand,so Sir Ronald developed the ANOVA shortcut. 

hardly.  They do have some mathematics in common (through use of dummy
variables which some of us think is for dummies).  they are comceptually
completely different/  Unfortunately many people misuse ANOVA because they
think of it as regression analysis.


Later Jack Cohen showed in
: his seminal paper " Multiple regression as a general data analytic system"
: that using the general linear model does the job.
Actually Yates showed it in 1933 and many of us used dummy variables long
before Cohen

: I'm always teasing my colleagues and students, if you spent one year
: learning ANOVA and one year multiple regression you've wasted almost one
: year of your life.

you can learn the mathematics of regression analysis in 10 minutes but
you're still a long way from understanding either it or ANOVA


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