ANOVA and MANOVA Analysis in R

===== Likes: 147 👍: Dislikes: 3 👎: 98.0% : Updated on 01-21-2023 11:57:17 EST =====
All you really need to know for ANOVA and MANOVA analysis. Code example and interpretation in R!

0:00 - What is MANOVA and ANOVA?
6:23 - Multivariate test relationships
7:57 - Relationships between independent variables and LOTS of dependent variables
8:53 - Alternative for finding relationships (Boxplots)
10:56 - Contrasts for finding inner relationships + Linear Hypothesis

[christianching]

Thanks! But at 8:13 I think you make a mistake by stating treatment factor has no effect when its P value was lower than the representation factor?

[Wulpixmtt]

Great video! I could carry my analysis from start to end without any issue! Thank you so very much for the help!

[justinarends]

Really appreciate the video! Super helpful in interpreting results AND how to apply the code!

[asdwre]

Thank you for doing the video! It’s really helpful.

[MMShale]

This was super helpful and easy to follow! Thank you so much for helping me get through my thesis!

[sambasilva]

Muito bom! Excelente explicação. Obrigado.

[SilencedTomato]

Thanks a lot! How is it that at 4:48 you can call the TRT and REP column of your dataset without specifying the data it is in?
I would expect the line of code to read "treat_factor <- factor(cooked_turkey$TRT)". Is there some R-magic involved i am missing out on?

[Alandra]

Thank you a lot for the video! It really helped :)

[maneesh]

How to do Manova for 1 independent and more than 3 depndent variables ( Panel data set)... Kindly reply ASAP. Thanks Please provide emprical model for above case as well. Thanks a lot

[ConnetieAyesigaNinaz]

thank you, is it possible;le to share the code

[viviane]

Really great and useful video - thanks for sharing your knowledge! For my model I’m using multiple dependent variables that have different units (reaction time, rate, total scores, …). Is that a problem?

[jessstace]

Hi, I found this really useful and could follow up to the end bit. I only have two dependent variables so what do I do when you're doing the matrix bit at the end because I only have two. I want to get that interaction table between the dependent variables like you have. Thank you!!!

[pauljohncapote]

I have problem with Boxplots. Every time I run the codes, it says "Error in plot.new(): figure margins too large", could you help me, please?

[rupertgoddard]

Hi, Thanks for the great tutorial and I am now well on my way to performing my own MANOVA. I've stalled at the moment as I can't run:
mod <- manova(yvars~rep_factor + treat_factor, data=cooked_turkey).
I've substitued my own dataset but get returned:

Error in `[[<-.data.frame`(`*tmp*`, i, value = c(1L, 1L, 1L, 13L, 7L, :
replacement has 273 rows, data has 21
In addition: Warning message:
In storage.mode(v) <- "double" : NAs introduced by coercion.

Are you able to advise?
Understand if you can't. Best wishes.