All Questions
68
questions
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20
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Why Do Different MANOVA Test Statistics Produce the Same Approximate F and P Values in R?
I am using the manova() function in R to perform multivariate analysis of variance on my dataset. I have tried using different test statistics such as Pillai's ...
0
votes
0
answers
24
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Question about Degrees of Freedom in MANOVA
res <-manova(cbind(Sepal.Length, Sepal.Width) ~ Species, data=iris)
summary(res)
When running the above code, the result will be as follows:
...
0
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0
answers
31
views
Repeated measures MANOVA returning Pillai greater than 1
I am attempting to investigate the presence of a multivariate main effect using a repeated measures MANOVA.
I couldn't figure out how to include a table to share some data so I have included a ...
- 1
1
vote
0
answers
23
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Failure to meet the Scalar Invariance model
I did an 6 group experiment and I ran the multi-group CFA and failed to meet the Scalar model. I understand that the analysis should not compare means in that case but I can do MANOVA and SEM/...
- 61
1
vote
1
answer
39
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Which type of statistical analysis to run in R with 2 treatment types in my study?
(Originally asked on Stack Overflow, reposting here after a commentor mentioned this is a better place to ask it.)
I have a seed germination study that I am trying to analyze. In this study I had 4 ...
0
votes
1
answer
172
views
Normal and non-normal distribution of data?
I am quite an amateur in statistics. I have data where I would like to test if I can perform parametric or non-parametric testing depending on if the data is normally distributed or not.
The data has ...
0
votes
1
answer
1k
views
Two-way mixed repeated measures MANOVA in Python or R
I compare three groups:
A control group
Two different clinical populations
They are subjected to 6 different types of stimuli, several times each (repeated measures), and 5 dependent variables are ...
- 51
1
vote
1
answer
82
views
Model selection for $4\times 2\times 2$ factorial design in R
I have read so many books, forums, and sites that I have completely confused myself.
Originally, my design was a simple 4x2 factorial with two categorical predictors, but it has gotten more complex ...
- 101
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44
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Which statistical analysis should I use for my research proposal?
So I'm designing a study but not sure which statistical test to use.
Participants will be split into three groups - A, B, and C.
For all participants, I will first conduct a questionnaire and will use ...
0
votes
0
answers
128
views
Non-normal data, manova and kruskal_test
I am trying to perform a statistical test on a large data frame. For this, I was thinking to find differences between groups using MANOVA.
I have 70 columns and 2 independent variables.
In the example ...
- 123
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0
answers
49
views
Finding variable contribution in manova
I have a dataset with one grouping factor and some dependent continuous variables. Given the difference, I want to know which variables contribute the most to the difference, like this variable A is ...
- 1
2
votes
0
answers
795
views
MANOVA test statistics with GLM Multivariate Multiple Regression in R
Good afternoon! I am currently working on my master thesis and I am a bit stumped on how to proceed practically with my analysis.
I am running a Multivariate Multiple analysis on a dataset, so I have ...
- 21
0
votes
1
answer
79
views
If data is square rooted to assume normality, should the data used to test with Levene's Test for Equality of Variance also be square rooted?
I am going to run a MANOVA, two of the assumptions are normally distributed data and equal variances.
I had a data set that non-normally distributed. I square rooted it, and it is approximately ...
1
vote
1
answer
55
views
Analyses of Gene expression dataset, what stat test?
I was wondering if there was a way to analyse my RNA seq dataset in a way that I could work out which day the specific gene I have is most significantly expressed?
I have a RNA seq dataset with 6 days ...
- 11
3
votes
2
answers
444
views
Replicating an SPSS manova in R
I'm trying to replicate the top part of the SPSS manova table 3.17 shown on page 127 in this book (just type 148 in the page ...
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