Search Results
| Search type | Search syntax |
|---|---|
| Tags | [tag] |
| Exact | "words here" |
| Author |
user:1234 user:me (yours) |
| Score |
score:3 (3+) score:0 (none) |
| Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
| Views | views:250 |
| Code | code:"if (foo != bar)" |
| Sections |
title:apples body:"apples oranges" |
| URL | url:"*.example.com" |
| Saves | in:saves |
| Status |
closed:yes duplicate:no migrated:no wiki:no |
| Types |
is:question is:answer |
| Exclude |
-[tag] -apples |
| For more details on advanced search visit our help page | |
Results tagged with r
Search options not deleted
user 11384
Use this tag for any *on-topic* question that (a) involves `R` either as a critical part of the question or expected answer, & (b) is not *just* about how to use `R`.
2
votes
0
answers
1k
views
How to check and correct heteroskedasticity in a multilevel model?
To analyze the data, I'have fitted a multilevel model in R, using the nlme package. I've considered the condition as fixed factor, while time is a random factor (nested in subjects). …
- 133
5
votes
2
answers
4k
views
Multilevel covariance structure and more
I have some doubts about the covariance structure in a multilevel model fitted in R (using the nlme package). … The R command I'm using is:
lme(fixed= FR ~ CONDITION, data=mydata, random= ~ TIME | SUBJECT)
My (many) questions are both theoretical and practical:
Which covariance structure lme does use by default …
- 133
1
vote
1
answer
5k
views
What is the difference between corAR1 and corCAR1 correlation structures?
I'm fitting a mixed multilevel model in R using the nlme package, and I don't understand what is the difference between the covariance structures corAR1 and corCAR1. Can someone help me? …
- 133