Explaining Variance Explained in Mixed Models

Рет қаралды 13,481

3 жыл бұрын

Learning Objectives:
#1. Understand what variance explained means
#2. Why variance explained is more complicated for mixed models
#3. Be able to use model.comparison in flexplot
This video is part of my multivariate playlist: This is part of a playlist on multivariate statistics: • Multivariate Statistics
Here are other videos about mixed models:
• Mixed Models, Hierarch...
• Mixed Model Notation -...

Пікірлер: 26

@FilippoGianburrasca 5 ай бұрын

7:53 you ran the model at line 56 but then you commented it like it was the model at line 60, which you didn't run (if I'm not mistaken)

@firuzerehimova6355 Жыл бұрын

you are a supeeer annoying but also addictive teacher thanks x

@QuantPsych 4 ай бұрын

umm....thanks?

@rachitsingh98 2 жыл бұрын

Thanks for the nice explanation, Dustin! When I tried to follow this approach I was not shown the R-squared change values. Could this be because I was using the "glmer.nb" function and that the R2 calculation is tricky in that case?

@julitwiga 2 жыл бұрын

I'm running RStudio 2021.09.2 Build 382 "Ghost Orchid" Release for Mac OS, and flexplot 0.13.3 and I get the following message when I run the baseline you mention in this video: Error in reformulate(paste0("(", vapply(findbars(f), deparse1, ""), ")"), : unused argument (env = environment(f)). Any thoughts?

@vietbio1 2 жыл бұрын

Hi, I got Error "$ operator not defined for this S4 class" when I try compare.fits function. How can I fix that?

@dann4179 2 жыл бұрын

What does it mean the ghost.line black line in the compare.fits you are doing ?

@pranavjain9799 Жыл бұрын

Thank you so much. Teachers often just skip over what "variance explained" mean. Also, at 1:58, I think you mean't to say "Because they are heavier"

@FilippoGianburrasca 5 ай бұрын

* fatter

@elliothoward-spink2120 Жыл бұрын

model.comparison() from the RRPP package wont let me use an lmer object - do you know why? it says 'Objects must be lm.rrpp fits' :-(

@eyadha1 Жыл бұрын

Thank you very much. Can you make a video abot sample size in mixed effects models? thank you

@FilippoGianburrasca 5 ай бұрын

8:40 why it doesn't report also the improvement in the slope variance (i.e. how each cluster slope differs from the grand slope)?

@helenadamson6709 3 жыл бұрын

Your videos are so helpful - and enjoyable - but ... " package ‘flexplot’ is not available (for R version 4.0.2)"

@QuantPsych 3 жыл бұрын

It must be installed from github: install.packages("devtools") devtools::install_github("dustinfife/flexplot")

@zimmejoc Жыл бұрын

Hi all. I'm running Flexplot version 0.19.1 so quite a bit newer than what Dustin is running here. If you DO NOT have the r squared change output, you'll need to detach the lmerTest package. At least when I detached lmerTest, I got the r squared change output.

@taranaferdous2858 14 күн бұрын

I do not see the felxplot in r package. Is it removed?

@QuantPsych 12 күн бұрын

No, you have to install from github.

@ajaydhungana1921 2 жыл бұрын

Hi..can you make short video on how REML estimates variance components in mixed model.. i mean whats goes inside of REML. hoe does it treats the data sets..Thanks...SUbscribed your channel.