similar to: Sobel's test for mediation and lme4/nlme

Displaying 20 results from an estimated 400 matches similar to: "Sobel's test for mediation and lme4/nlme"

2020 Apr 23
2
Looking for C8 AMD help
I'm migrating from C7 to C8.? I'm currently using autofs, but alas autofs has been dropped in C8 for the AMD automounter. I have some very ancient knowledge of AMD, I used it when it was first introduced many years ago on Solaris and moved to Sun's automounter when it was introduced. So now it's back to square one. I used automount2amd to convert one of my existing maps,
2010 Jun 24
0
sobel.lme
Dear R-community, I am just conducting various mediation analyses with data from individual participants who are nested in teams. I found the ?sobel.lme? function to be pretty helpful when doing so. (A big thank you to Paul Bliese for his multilevel-package and the awesome manual!) Here?s the example from the Help-file: data(bh1996) library(nlme) #A small but significant indirect effect indicates
1999 Apr 27
1
Failed Logins (ntang@rga.com)
Nicholas: Regarding your problem: "The SGI server is only serving files, no home directories, no printers (we have separate NT servers for each of those functions), and it is using "SERVER" level security. Encryption is on. Guest logins are disabled ... I'm confused greatly by this - one day, a user's login will work, another day, it'll suddenly stop working. "
2020 Apr 24
0
Looking for C8 AMD help
On 4/23/20 4:23 PM, Pete Geenhuizen wrote: > I'm migrating from C7 to C8.? I'm currently using autofs, but alas autofs has been dropped in C8 for the AMD automounter. Nope, it's in there! 8/BaseOS/x86_64/os/Packages/autofs-5.1.4-35.el8.x86_64.rpm > I have some very ancient knowledge of AMD, I used it when it was first introduced many years ago on Solaris and moved to Sun's
2005 Sep 15
1
Coefficients from LM
Hi everyone, Can anyone tell me if its possibility to extract the coefficients from the lm() command? For instance, imagine that we have the following data set (the number of observations for each company is actually larger than the one showed...): Company Y X1 X2 1 y_1 x1_1 x2_1 1 y_2 x1_2 x2_2 1 y_3 x1_3 x2_3 (...) 2 y_4 x1_4 x2_4 2 y_5 x1_5 x2_5 2 y_6 x1_6 x2_6 (...) n y_n x1_n x2_n n
2006 Dec 31
1
rimage package broken with fedora upgrade
Dear R list members I would be grateful if anyone could guide me to a solution for fixing my rimage package problem described below. I recently upgraded my machine from fedora core 3 to fedora core 6 and then upgraded R from version 2.3.1 from version 2.4.1. I then fired up R, tried to load the rimage library and received the following messages: > library(rimage) Error in dyn.load(x,
2008 Nov 12
1
rimage doesn't install on Mac OS X 10.4
Hi, I'm trying to install rimage on a Mac OS X 10.4 machine. I followed the advice in previous R-help threads and got over the hurdles of having the header files in the right places, among other things. But I can't figure out what to do with this error. ice.pnl.gov:/home/waichler<949>system_profiler -detailLevel mini SPSoftwareDataType Software: System Software Overview:
2005 Jul 11
2
CIs in predict?
Dear All, I am trying to put some Confidence intervals on some regressions from a linear model with no luck. I can extract the fitted values using 'predict', but am having difficulty in getting at the confidence intervals, or the standard errors. Any suggestions would be welcome Cheers Guy Using Version 2.1.0 (2005-04-18) on a PC vol.mod3 <-
2005 Aug 29
1
Different sings for correlations in OLS and TSA
Dear list, I am trying to re-analyse something. I do have two time series, one of which (ts.mar) might help explaining the other (ts.anr). In the original analysis, no-one seems to have cared about the data being time-series and they just did OLS. This yielded a strong positive correlation. I want to know if this correlation is still as strong when the autocorrelations are taken into account.
2006 Aug 29
2
lattice and several groups
Dear R-list, I would like to use the lattice library to show several groups on the same graph. Here's my example : ## the data f1 <- factor(c("mod1","mod2","mod3"),levels=c("mod1","mod2","mod3")) f1 <- rep(f1,3) f2 <-
2011 Nov 17
1
Log-transform and specifying Gamma
Dear R help, I am trying to work out if I am justified in log-transforming data and specifying Gamma in the same glm. Does it have to be one or the other? I have attached an R script and the datafile to show what I mean. Also, I cannot find a mixed-model that allows Gamma errors (so I cannot find a way of including random effects). What should I do? Many thanks, Pete --------------
2006 Feb 01
5
Sybase ctlib Adapter
Hi, I''ve been trying to update Will Sobel''s sybase-ctlib adapter to pass unit tests on Rails 1.0. It''s been a slow, sloggy process for me so far, as I''ve been learning Ruby, Rails, and Sybase administration all in one go. (c: It''s been a saving grace to have a good starting point (thanks Will!). http://dev.rubyonrails.org/ticket/2030
2003 Feb 10
2
problems using lqs()
Dear List-members, I found a strange behaviour in the lqs function. Suppose I have the following data: y <- c(7.6, 7.7, 4.3, 5.9, 5.0, 6.5, 8.3, 8.2, 13.2, 12.6, 10.4, 10.8, 13.1, 12.3, 10.4, 10.5, 7.7, 9.5, 12.0, 12.6, 13.6, 14.1, 13.5, 11.5, 12.0, 13.0, 14.1, 15.1) x1 <- c(8.2, 7.6,, 4.6, 4.3, 5.9, 5.0, 6.5, 8.3, 10.1, 13.2, 12.6, 10.4, 10.8, 13.1, 13.3, 10.4, 10.5, 7.7, 10.0, 12.0,
2003 Apr 27
0
grpid and mount
Originally posted to the newsgroup. Do NG posts get forwarded to the list???? This is actually a mount question, but please bear with me. I have a separate hard drive in my linux box that I use for sharing with all of the other (trusted) windows clients in my home network. When I mount it, I use the grpid flag because I want the drive to be a completely shared drive and not have to worry about
2011 Mar 19
1
strange PREDICTIONS from a PIECEWISE LINEAR (mixed) MODEL
Hi Dears, When I introduce an interaciton in a piecewise model I obtain some quite unusual results. If that would't take u such a problem I'd really appreciate an advise from you. I've reproduced an example below... Many thanks x<-rnorm(1000) y<-exp(-x)+rnorm(1000) plot(x,y) abline(v=-1,col=2,lty=2) mod<-lm(y~x+x*(x>-1)) summary(mod) yy<-predict(mod)
2006 Jun 23
2
Getting a list of users in a group - how?
Hi all, Hopefully this is a simple one - I'm trying to work out how to get a list of users in a certain group. If I have the following set up in Active Directory: Group1 - UserA - UserB Group2 - UserC - UserD AllGroups - Group1 - Group2 - UserX Then I want to be able to say "List all users in the AllGroups group" and I should get UserA,B,C,D and UserX
2008 Nov 14
2
problem in downloading the rimage package
I am using a 64 bit machine with CentOS5. I am getting the following errors when I try to install the rimage package g++ -shared -L/usr/local/lib64 -o rimage.so equalize.o fftw_access_func.o freqfilters.o interface.o jpegio.o laplacian.o matrix.o smooth.o sobel.o -ljpeg -lfftw /usr/bin/ld: /usr/local/lib/libfftw.a(fftwnd.o): relocation R_X86_64_32 against `a local symbol' can not be used when
2012 Jan 19
3
fitting an exp model
Hello there, I am trying to fit an exponential model using nls to some data. #data t <- c(0,15,30,60,90,120,240,360,480) var <- c(0.36,9.72,15.50,23.50,31.44,40.66,59.81,73.11,81.65) df <- data.frame(t, var) # model # var ~ a+b*(1-exp(-k*t)) # I'm looking for values of a,b and k # formula # mod <- nls(formula = var ~ a+b *(1-exp((-k)*t)), start=list(a=0, b=10,
2009 Feb 13
0
problem with mediation
Dear friends, i've a little problem with a study about mediation. I will call my dependent variable "Y", the independent "X" and "Z" will be my mediator variable... Using a linear regression, i can say that there isn't a direct effect of X on Y because the coefficient of X isn't significative, but i've tried to use anyway the Sobel's test to
2003 Apr 28
2
stepAIC/lme problem (1.7.0 only)
I can use stepAIC on an lme object in 1.6.2, but I get the following error if I try to do the same in 1.7.0: Error in lme(fixed = resp ~ cov1 + cov2, data = a, random = structure(list( : unused argument(s) (formula ...) Does anybody know why? Here's an example: library(nlme) library(MASS) a <- data.frame( resp=rnorm(250), cov1=rnorm(250), cov2=rnorm(250),