Hi Peter, I thought it was possible to have multiple subjects in each group, while still specifying another factor, as is the case for repeated measures ANOVA. If this is not the case, I guess I should look into Regression models for count data as suggested by Micheal.
On Mon, Apr 13, 2015 at 1:13 PM, peter dalgaard <pda...@gmail.com> wrote: > By coincidence, there actually _is_ enough info to pinpoint the issue: > > > *Subj Group Emotion Response*94 HR Happy 2 > 119 HC Happy 0 > .... > 3 HR Sad 4 > 61 HC Sad 2 > 64 HC Sad 0 > ....etc > > An unreplicated complete block design has exactly 1 observation for each > combination of the two grouping factors. The above clearly has 2 > observations with "HC, Sad". So Friedman's test does not apply. > > > > On 13 Apr 2015, at 18:27 , John Kane <jrkrid...@inbox.com> wrote: > > > > We really need " commented, minimal, self-contained, reproducible code' > as asked for in the note at the end of each R-help message. > > > > Have a look at http://adv-r.had.co.nz/Reproducibility.html and/or > http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example > for some hints. > > > > In particular, in your case we almost certainly need some data. Please > use dput() to produce a useable data set. See Hakley's discussion at > http://adv-r.had.co.nz/Reproducibility.html for an example of how to to > this. > > John Kane > > Kingston ON Canada > > > > > >> -----Original Message----- > >> From: lindsay.hanf...@gmail.com > >> Sent: Mon, 13 Apr 2015 12:17:32 -0400 > >> To: r-help@r-project.org > >> Subject: [R] friedman.test error: not an unreplicated complete block > >> design > >> > >> Hello R Community, > >> > >> I am using the friedman.test() function to test differences in a > >> non-normally > >> distributed dataset, with a dependent variable that either a > >> continuous variable or a ratio and has 2+ groups. > >> > >> I am using the friedman.test instead of a repeated measures ANOVA > because > >> my dataset violated the assumptions for using an ANOVA. I am looking to > >> compare response means on an emotion-labelling task, between groups (HR, > >> HC) and emotions (Happy, Sad, Angry, Fearful) where these variables are > >> my > >> group and block variables, respectively. > >> > >> When I use the following command: > >>> friedman.test(Response~Group|Emotion, data=dataset) > >> I get the following error: > >> Error in friedman.test.default(c(1L, 1L, 0L, 0L, 0L, 1L, 0L, 2L, 0L, 0L, > >> : > >> not an unreplicated complete block design > >> > >> I believe I have set up my dataset correctly.. where Subject ID is > >> repeated for > >> the four categories of emotion. The variable Error contains the number > of > >> incorrect response corresponding to each emotion. > >> > >> > >> *Subj Group Emotion Response*94 HR Happy 2 > >> 119 HC Happy 0 > >> .... > >> 3 HR Sad 4 > >> 61 HC Sad 2 > >> 64 HC Sad 0 > >> ....etc > >> > >> I think the error c(1L, 1L, 0L, 0L, 0L, 1L, 0L, 2L, 0L, 0L,... ) > >> corresponds > >> to my Response variable and might not be happy about is the number of > 0's > >> that > >> appear in that variable. However, this is the reason my dataset is not > >> normally > >> distributed and I cannot use rmANOVA. > >> > >> Any ideas how to deal with this error? Or whether I should be using a > >> different statistical test? > >> Thanks, > >> > >> Lindsay > >> -- > >> Lindsay Hanford, BSc, PhD Candidate > >> McMaster Integrative Neuroscience Discovery & Study | *Department of > >> Psychology, Neuroscience & Behaviour * > >> McMaster University *|* lindsay.hanf...@gmail.com > >> > >> [[alternative HTML version deleted]] > >> > >> ______________________________________________ > >> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > >> https://stat.ethz.ch/mailman/listinfo/r-help > >> PLEASE do read the posting guide > >> http://www.R-project.org/posting-guide.html > >> and provide commented, minimal, self-contained, reproducible code. > > > > ____________________________________________________________ > > Can't remember your password? Do you need a strong and secure password? > > Use Password manager! It stores your passwords & protects your account. > > > > ______________________________________________ > > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > > https://stat.ethz.ch/mailman/listinfo/r-help > > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > > and provide commented, minimal, self-contained, reproducible code. > > -- > Peter Dalgaard, Professor, > Center for Statistics, Copenhagen Business School > Solbjerg Plads 3, 2000 Frederiksberg, Denmark > Phone: (+45)38153501 > Email: pd....@cbs.dk Priv: pda...@gmail.com > > > > > > > > > -- Lindsay Hanford, BSc, PhD Candidate McMaster Integrative Neuroscience Discovery & Study | *Department of Psychology, Neuroscience & Behaviour * McMaster University *|* 1280 Main Street West, PC329 Psychology Building *|* Hamilton, ON, L8S 4L8 905 525 9140 x24784 *|* lindsay.hanf...@gmail.com [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
