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RegisterSS, Unbalanced 3X3 crossover Design [General Statistics]
Hello im.sagark,
1. Since you know you that whatever you previously tried gives you the wrong calculation I think you must have access to some sofwtare that gives you the right calculation so why not just use that?
2. It is sometimes a nightmare to derive general non-matrix formulae. Really, truly, honestly, I would rather swim to the South Pole than do it.
Assuming you use a normal linear model and not a mixed model where no SS discussion is particularly relevant, in matrix notation you have
or some numerically appropriate and stable alternative. That is what the software does also.
From such solutions you can always derive for example type I and type III SS estimates.
❝ I have 3 periods, 3 treatments and 6 sequences, and 9 subjects. So I don't have exactly 2 subjects in each sequence.
❝ Getting wrong calculations for Sum of squares for sequence,period and treatments.
❝ Can you please provide me the correct formula for the sum of squares??
1. Since you know you that whatever you previously tried gives you the wrong calculation I think you must have access to some sofwtare that gives you the right calculation so why not just use that?
2. It is sometimes a nightmare to derive general non-matrix formulae. Really, truly, honestly, I would rather swim to the South Pole than do it.
Assuming you use a normal linear model and not a mixed model where no SS discussion is particularly relevant, in matrix notation you have
logPK=y=Xb+e. So if you construct your design matrices X appropriately then you can analytically estimate the maximum likelihood b (max likelihood is here a minimisation of eTe) using for exampleb=(XtX)-1Xtyor some numerically appropriate and stable alternative. That is what the software does also.
From such solutions you can always derive for example type I and type III SS estimates.
—
Pass or fail!
ElMaestro
Pass or fail!
ElMaestro
Complete thread:
- Sum of squares for Unbalanced 3X3 crossover Design im.sagark 2013-06-06 09:16
![[Mix]](https://static.bebac.at/img/mix.png "open in Mix view")
- SS, Unbalanced 3X3 crossover DesignElMaestro 2013-06-06 11:13
- SS, Unbalanced 3X3 crossover Design im.sagark 2013-06-06 11:20
- SS, Unbalanced 3X3 crossover Design im.sagark 2013-06-06 11:31
- SS, Unbalanced 3X3 crossover Design Dr_Dan 2013-06-06 12:21
- SS, Unbalanced 3X3 crossover Design im.sagark 2013-06-06 13:38
- SS, Unbalanced 3X3 crossover Design Dr_Dan 2013-06-06 12:21
- SS, Unbalanced 3X3 crossover Design im.sagark 2013-06-06 11:31
- SS, Unbalanced 3X3 crossover Design im.sagark 2013-06-06 11:45
- SS, Unbalanced 3X3 crossover Design ElMaestro 2013-06-06 12:06
- SS, Unbalanced 3X3 crossover Design im.sagark 2013-06-06 12:27
- SS, Unbalanced 3X3 crossover Design ElMaestro 2013-06-06 12:55
- SS, Unbalanced 3X3 crossover Design im.sagark 2013-06-06 13:17
- SS, Unbalanced 3X3 crossover Design ElMaestro 2013-06-06 17:25
- SS, Unbalanced 3X3 crossover Design im.sagark 2013-06-07 05:54
- SS, Unbalanced 3X3 crossover Design ElMaestro 2013-06-06 17:25
- SS, Unbalanced 3X3 crossover Design im.sagark 2013-06-06 13:17
- SS, Unbalanced 3X3 crossover Design ElMaestro 2013-06-06 12:55
- SS, Unbalanced 3X3 crossover Design im.sagark 2013-06-06 12:27
- SS, Unbalanced 3X3 crossover Design ElMaestro 2013-06-06 12:06
- SS, Unbalanced 3X3 crossover Design im.sagark 2013-06-06 11:20
- SS, Unbalanced 3X3 crossover DesignElMaestro 2013-06-06 11:13
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