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9 results for “from:Matthew Bridgman”

effect size
Matthew Bridgman · Jun 21, 2006 · r-help

Does anyone know a simple way of calculating effect sizes? Thanks MB

reading text into R
Matthew Bridgman · Apr 16, 2006 · r-help

Does anyone know of a function 'readTranscript' for reading text into R? Thanks MB

Multilevel Modeling in R
Matthew Bridgman · Dec 4, 2006 · r-help

Can anyone recommend a good text or resource for learning how to do Multilevel modeling in R? Thanks, Matt

choose.files() on a mac
Matthew Bridgman · Feb 21, 2007 · r-help

the function 'choose.files()' won't work on my mac version of R Does anyone know of a comparable function? Thanks, Matt

lm ANOVA vs. AOV
Matthew Bridgman · Feb 27, 2007 · r-help

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power calculation for repeated measures ANOVA?
Matthew Bridgman · Sep 16, 2007 · r-help

Is there a way to calculate power for repeated measures ANOVA (2 groups x 7 observations)? I have searched all over, but all I can find is power.anova.test, but that would not give accurate results, right? Thanks, Matt...

warning messages
Matthew Bridgman · Jun 25, 2006 · r-help

I want to put warning messages into some of my functions to remind myself to change the output file names each time I run them. Is there a way to do this that will allow me to respond to the...

graphing with barchart question
Matthew Bridgman · May 7, 2007 · r-help

I am graphing data using barchart (barchart(DV ~ IV | subject). I have 2 groups of 9 subjects each. How can I easily identify which group each subject belongs to? I have been trying to color code them, but can't...

graphing with barchart question
Matthew Bridgman · May 7, 2007 · r-help

Sorry. I have attached my data frame: DV = dv; IV = bins; subject = id, Group = group. barchart(dv ~ bins | id + group, groups = group, data = matt.df) The two suggestions you offered give me error messages regarding invalid line type and do...

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