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A question on Statistics
2 messages · Maithula Chandrashekhar, Bert Gunter
Maithula: On Sun, Dec 26, 2010 at 11:09 AM, Maithula Chandrashekhar
<m.chandrashekhar1977 at gmail.com> wrote:
I am not a pure Statistics background and therefore please forgive me if this question (which is not R related either) is too trivial. In many Statistics literature I find following statement: "restrictions in different coefficients matrices have to be imposed to ensure uniqueness of the parametrization". Can somebody tell me what is the meaning of Uniqueness in the parametrization? Does it mean that, two different coefficient matrices may give exactly the same result, and therefore coefficient matrix is not unique?
-- yes. See the section on "contrast matrices" in Venables and Ripley's "Modern Applied Statistics with S" (MASS) for a concise but, I think, illuminating explanation. (It's in the chapter on linear models/regression). -- Bert
I find there are many members (perhaps all) in this forum who are really masters in Statistics. Therefore I hope somebody will clarify me with the intuition behind that. Thanks, ? ? ? ?[[alternative HTML version deleted]]
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Bert Gunter Genentech Nonclinical Biostatistics 467-7374 http://devo.gene.com/groups/devo/depts/ncb/home.shtml