similar to: strategy for doing an ANOVA on unbalanced data

Hello all, I have become somewhat confused with options available for dealing with a highly unbalanced data set (10000 in one class, 50 in the other). As a summary I am unsure: a) if I am perform the two class weighting methods properly, b) if the data are too unbalanced and that this type of analysis is appropriate and c) if there is any interaction between the weighting for class imbalances

Hi folks, I have a dataset from a trial measuring the subjects' pupils. There are many measurements, all of which must be analysed in a similar fashion; so if I get the analysis right for one of them, I've got them all. For simplicity, let us call any measurement we may be interested as "response". The study design is an unbalanced latin square, with 5 periods, 5 treatments and

Dear R-Community! For example I have a study with 4 treatment groups (10 subjects per group) and 4 visits. Additionally, the gender is taken into account. I think - and hope this is a goog idea (!) - this data can be analysed using lme as below. In a balanced design everything is fine, but in an unbalanced design there are differences depending on fitting y~visit*treat*gender or

Hi, This question is related to the bwplot issue I reported yesterday. I have a 3 factors (2x3x2) dataset that I collapsed into a 2 factors dataset (3x2 = sizexModality). For size==small, I have 2 observations per subject (Snr), for the other sizes only 1. I reckoned that aov (and underneath, lm) might handle this as it should, since the subjects are idendified, when I do > aov(

Dear all, I need an help because I am really not able to find over internet a good example in R to analyze an unbalanced table with Anova with repeated measures. For unbalanced table I mean that the questions are not answered all by the same number of subjects. For a balanced case I would use the command aov1 = aov(response ~ stimulus*condition + Error(subject/(stimulus*condition)), data=scrd)

Dear r-helpers, I am looking at a designed experiment in which one predictor variable has 5 levels (0, ..., 4) and the other has 6 levels (1.1, ..., 1.6), with 33 observations per cell. This design was given to 13 subjects. 0 1 2 3 4 1.1 32 33 0 0 0 1.2 33 33 33 0 0 1.3 33 33 33 33 0 1.4 0 0 33 33 33 1.5 0 0 0 33 33 1.6 0 0 0 0 33 The reason for this

Hi, I have a experiment with block, plots, sub-plots, and sub-sub-plots with repeated measures and 3 factors (factorial design) when we have been observed diameter (mm), high (cm) and leaves number (count). However, we don't have one treatment in one factor, so, my design is unbalanced. On a previous message here, a friend tell me that "It appears to me that your design is a split-split

Dear all, I have some questions regarding the validity an implementation of statistical tests based on linear models and loess. I've searched the R-help arhives and found several informative threads that related to my questions, but there are still a few issues I'm not clear about. I'd be grateful for guidance. Background and data set: I wish to compare the growth and metabolism

Dear R people: I wish to switch from SPSS to R, but there is one particular type of ANOVA design that cannot be done in R. Or more likely, it can be done, but it is nowhere documented. The problem is typical for psychologists: You have a repeated measures design with different groups of subjects. Now, this can be done with the aov command, but the number of subjects in both groups must be

CentOS Errata and Bugfix Advisory 2014:0587 Upstream details at : https://rhn.redhat.com/errata/RHBA-2014-0587.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: aa9e8c59429c405dbce170189f6c91c89ec214335af6c5633b595c4f4d16f581 finger-0.17-40.el6.i686.rpm bedf14297e4c0ffb238b107c66ef8df77678665f67666387df4cd945488c7842

I don't know if this has been requested before, but I would really like for rsync to compute an md5sum for each file at the source and destination (with a flag turned off by default of course), and it would realize that I renamed files at the source by noticing a matching md5sum between different filenames It would then rename the destination instead of deleting it and resending the entire

Hi, I'm trying to set up samba 2.0.7 on our Solaris 2.7 box to do some utmp logging. Alls fine except is screws up finger: [35] ucacast@lambda: finger @bruce [bruce.cs.ucl.ac.uk] finger: Can't stat /dev/smb/1 [36] ucacast@lambda: Any work arounds? can I just logg to wtmp, so that finger works and I can do a last? I've tried playing around, but can't seem to come up with a

Hi, assume that I have a repeated measure dataset with 3 time points: baseline, day 5 and day 10. There are 4 treatment groups (vehicle, treatment 1, treatment 2 and treatment 3). 20 subjects per treatment group. A simple straight-forward way to analyze the data is to use mixed model: model 1: obj <- lmer(y ~ treatment * time +(time|subject)) where time is numeric with value 0,5 and 10.

The first snapshot for synaptics 1.9 is now available. A bunch of patches that have been sitting on git master for quite a while now but many of these have been ported over to the 1.8.x stable releases. Perhaps the most (in)significant change in this release is that we dropped touch events from the driver. Previously, when all in-driver gestures like two-finger scrollings were disabled, the

[Mod: while not directly related to linux security, this post of course is approved because it provides a good summary and clear description. Please limit the discussion on this topic to new stuff. In general posts like this will be approved -- alex] Automating brute force attacks with ''Expect" balif and desslok - Abstract - phf,

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Hello All, I have a client-server setup with about 100 nodes. We often install the OS and this results in change of host keys in our server. This necessiates the need to update all known_hosts files in the client machines. Im using the VerifyHostKeyDNS option in the client side where the DNS is updated with new finger print each time we change the host key. But still the SSH client verifies

G''Day Folks, Well, I had a weekend home in Sydney while inbetween flights and have knocked out a few programs. (I''ve been programming for 23 hours straight, so if there is something really dumb in one my scripts then please excuse me :) # socketsnoop.d UID PID DIR SIZE CMD 0 19886 W 64 ssh mars 0 19886 R 80 ssh mars 0 19915 W 0

CentOS Errata and Bugfix Advisory 2011:0467 Upstream details at : https://rhn.redhat.com/errata/RHBA-2011-0467.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) i386: 66a610f411d56551eac3b77bab9f5638 finger-0.17-33.i386.rpm f5becc6e09eefa35e9dd797ab25c8d57 finger-server-0.17-33.i386.rpm Source:

CentOS Errata and Bugfix Advisory 2011:0467 Upstream details at : https://rhn.redhat.com/errata/RHBA-2011-0467.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) x86_64: ce1eaeaaf57cc8ae777d675d2409f841 finger-0.17-33.x86_64.rpm 6828cae7b5da377e61369562e66dce25 finger-server-0.17-33.x86_64.rpm Source: