Search found 8 matches

by ertugruluyar
Sat Sep 28, 2024 4:55 am
Forum: Statistics
Topic: mean centering & variables scaling
Replies: 8
Views: 97901

Re: mean centering & variables scaling

mcfanda@gmail.com wrote: Sat Sep 28, 2024 1:50 amGreat
Thank you again and again, have a great day.
by ertugruluyar
Fri Sep 27, 2024 12:21 pm
Forum: Statistics
Topic: mean centering & variables scaling
Replies: 8
Views: 97901

Re: mean centering & variables scaling

Please have a look here https://gamlj.github.io/book/glm.html#anova, and here https://gamlj.github.io/rosetta_contrasts.html Thank you so much, I get a bit more now. For other than the interactions, simple and dummy doing the same thing because "centering around zero = no centering". But,...
by ertugruluyar
Thu Sep 26, 2024 12:45 pm
Forum: Statistics
Topic: mean centering & variables scaling
Replies: 8
Views: 97901

Re: mean centering & variables scaling

I am confused right now and I didn't quite get this explanation:
https://gamlj.github.io/mixed.html#factors-coding
by ertugruluyar
Thu Sep 26, 2024 12:22 pm
Forum: Statistics
Topic: mean centering & variables scaling
Replies: 8
Views: 97901

Re: mean centering & variables scaling

1. sure, that is the default. With mixed model is always a good idea to center the covariates (although not necessary) 2. any factor is transformed in contrast variables and their coding is mean-centered (if do not select "dummy" as a coding system) 3. yes Hi, I have this variable with co...
by ertugruluyar
Tue Sep 24, 2024 6:45 am
Forum: Statistics
Topic: Is there a missing assumption check in the Linear Mixed Model anaylysis in the GAMLj3 module?
Replies: 4
Views: 73820

Re: Is there a missing assumption check in the Linear Mixed Model anaylysis in the GAMLj3 module?

Thank you, I am gonna look the link you gave me (Probably I am gonna cite this paper). I am gonna give the graph that I shared in here, and I am gonna point out "This is not a must-have". And also this is not relevant, but I want to say while it is coming to my mind. I had tried JReshape m...
by ertugruluyar
Mon Sep 23, 2024 8:19 am
Forum: Statistics
Topic: Is there a missing assumption check in the Linear Mixed Model anaylysis in the GAMLj3 module?
Replies: 4
Views: 73820

Re: Is there a missing assumption check in the Linear Mixed Model anaylysis in the GAMLj3 module?

The residuals-predicted scatterplot:
residuals-predicted scatterplot
residuals-predicted scatterplot
1.png (367.98 KiB) Viewed 73814 times
by ertugruluyar
Mon Sep 23, 2024 8:05 am
Forum: Statistics
Topic: Is there a missing assumption check in the Linear Mixed Model anaylysis in the GAMLj3 module?
Replies: 4
Views: 73820

Re: Is there a missing assumption check in the Linear Mixed Model anaylysis in the GAMLj3 module?

And also, I watch this youtube videos and thisperson checking 3 graph and saying "All assumptions are okey.". Is there no consensus on these assumptions in the literature?
1. https://youtu.be/1DBujFQsJ_U?t=770
2. https://youtu.be/CiYHoxXKA5w?t=1127
by ertugruluyar
Mon Sep 23, 2024 7:58 am
Forum: Statistics
Topic: Is there a missing assumption check in the Linear Mixed Model anaylysis in the GAMLj3 module?
Replies: 4
Views: 73820

Is there a missing assumption check in the Linear Mixed Model anaylysis in the GAMLj3 module?

Hi, I was doing assumption checks for my analysis' in my thesis. I couldn't figure it out this, could you help me: Is there a way to handle these assumptions in this module (or in the jamovi): 1. Homogenity of variances (Homogenity of level-1 variances ?) (Equality of level-1 variances for each leve...