All Questions
14 questions
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In a repeated measures ANOVA, is the pairwise comparison result still valid if sphericity is not assumed?
For the pairwise comparison, the p value is less than 0.001. However, the p value for Mauchly's test of sphericity is also <0.001. I believe that SPSS automatically applies the Greenhouse-Geisser ...
0
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2
answers
492
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Should I use a repeated measures MANOVA or several repeated measures ANOVAs?
I'm doing a randomised controlled trial, it has four dependant variables each measured at three time points. The data is normally distributed.
My question is how to analyse this. I'm wondering whether ...
- 101
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2
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1k
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Insignificant two-way MANOVA results - what do I do next?
I am very very new to stats. I decided to try and do a MANOVA in SPSS, my between-subjects IV is gender and my within-subjects IV is the two conditions in which all participants took part. My DV is ...
1
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2
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16k
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Is there a non-parametric alternative to Two-Way Repeated Measures Anova?
I am currently comparing the EEG funcional connectivity measured at 14 electrodes and 4 frequency bands between highly and lowly hypnotic susceptible individuals. I extracted the coherence and the ...
- 11
0
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1
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33
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Choosing Statistical Test for my dataset
I was wondering if someone could help me. I have a dataset from a clinical trial which tests the impact of therapy on a group of cannabis users with psychotic symptoms. It's a randomised control trial ...
- 1
0
votes
0
answers
597
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Follow Up Simple 2-Way Interactions
After conducting a 3-Way in-between subjects ANOVA, I see there is a significant interaction among the 3 independent var, XYZ (2 levels). As a follow up, I conducted a simple 2-Way interaction between ...
- 337
1
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0
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40
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1-Way Within Subject ANOVA - sig value
There is 1 independent var (AT) with two levels (PQ_Low and PQ_High).
My SPSS output reveals sig as 0.000
Can I assume that my p-value is significant as it is less than the alpha level of 0.05?
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- 657
1
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0
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51
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Determining the correct test for experiment design
I'm trying to figure out the right test to use for my experimental design, I was hoping someone here could help. Here's the structure:
Two independent variables, IV1 and IV2. IV1 has 3 levels, IV2 ...
- 131
0
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1
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579
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Repeated measures ANOVA or MANOVA (SPSS)
I have an experimental design of two independent groups (pregnant/non-pregnant), in which each person has described past memories and future episodes on different variables on a scale from 1-7. ...
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1
vote
1
answer
237
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SPSS ANOVA or MANOVA or huh?
Me again asking the silly questions - this might belong here as I've been told it may belong in a software section somewhere..? Which I have still been unable to find.
Here is a screenshot of my data:...
4
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1
answer
9k
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How to follow up a factorial MANOVA with discriminant analysis?
This is a follow-up to to my previous question: How can MANOVA report a significant difference when none of the univariate ANOVAs reaches significance?
I have two IVs with each having three levels ...
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2
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0
answers
2k
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What is the difference between univariate post-hoc tests after MANOVA and usual ANOVAs?
When I run a $2 \times 4 \times 5 \times 6$ (Sex $\times$ AgeGroup $\times$ HighestDegree $\times$ Ethnicity) MANOVA (with 20 dependent variables) in SPSS, it presents tests of between subjects ...
- 21
2
votes
2
answers
8k
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Multiple dependent variables in factorial design
I have a 2x2x2 factorial design with two dependent variables (lets say height and weight). I can examine the effect of the three factors for each dependent variable separately. But I also want to ...
- 21
4
votes
2
answers
13k
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When to interpret multivariate tests when performing repeated-measures ANCOVA?
Yesterday, I ran a repeated-measures ANCOVA. The purpose was to determine the usability of two computer systems, call them 1 and 2. Each subject completed three (conceptually different) tasks, call ...
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