search for: factor_i

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2007 Sep 13
2
Multivariate, multilevel regression?
...ows(); plot(t, sqrt(3*t), type='n', xlab='time', ylab='heart rate'); grid() for (i in seq(along=f)) lines(t, sqrt(f[i]*t), col=ceiling(2*i)) Now I'm wondering where I should start and I'm think that this is really not much different from having a y_i ~ x_i | factor_i ... the i^th response curve just like a dummy variable male/female linear regression. But in some way the factors are related (there's a dose behind it, if ya see what I mean), so they are not independent...they're all part of a "system" (some studies have more "juice" o...