User: Shao, Chunxuan

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Posts by Shao, Chunxuan

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Comment: C: limma multiple groups comparison produces different pvalue comparing with two gr
... Hi Jim, Thanks very much for the thorough explanation. The pvalue is also smaller in real data, indicating that multiple group Comparison is more reasonable in general. Best, -- Chunxuan On 3/14/12 2:12 PM, "James W. MacDonald" wrote: >Hi Chunxuan, > > >On 3/13/2012 4:53 AM, Sha ...
written 7.1 years ago by Shao, Chunxuan20
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limma multiple groups comparison produces different pvalue comparing with two group comparsion
... Hi everyone: I am trying limma for multiple group comparison, and found that the pvalue of pairwise comparison is different from the two group comparsion. A simple example: ## multiple groups sd <- 0.3*sqrt(4/rchisq(100,df=4)) y2 <- matrix(rnorm(100*9,sd=sd),100,9) rownames(y2) <- paste( ...
limma written 7.1 years ago by Shao, Chunxuan20 • updated 7.1 years ago by James W. MacDonald49k

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