Questions tagged [manova]
Multivariate ANalysis Of VAriance (MANOVA) is a generalization of ANOVA for the case with several dependent variables.
206 questions with no upvoted or accepted answers
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How can I test for significance of a treatment in an unbalanced, repeated-measures experiment using R?
CrossValidated Community,
I must mention that I am a first-time poster (and relatively new to both modelling and R), so please excuse any norms I may violate in my post and politely inform me.
I ...
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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 ...
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How to compare first to second half of measurements in a counterbalanced behavioral experiment?
I want to compare measurements in two halves of a behavioral experiment to examine for learning effects. My first course of action is to split the measurements in the two halves and then repeat the ...
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What analysis do I need for 2 Ivs and 2 DVs?
I think I need a MANOVA, but I may need an ANCOVA and then also do an ANOVA within just the experimental group.
I think it's a 2x2 factorial independent measures ANOVA within the intervention group. I ...
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What non-parametric tests can be run to check the mediation analysis, since my data is not normally distributed?
I have two IVs (computed scores from likert scale) and one DV (computed scores from likert scale) IVs are Depression and Anxiety scores and DV is Social Connectedness scores. These are cintnuous. I ...
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All Individual DVs significant, but overall MANOVA not significant
I'm getting a weird result. Please check out the SPSS output below for CONDITION. All the DVs are showing significant results individually but the MANOVA is not significant. I've never seen this ...
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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/...
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Which statistical test - which sample is driving differences
I'm assessing whether the relative abundance of bacterial communities are different across two treatments.
I have a control (n=3), a food compost treatment (n=3) and a biosolid compost treatment (n=3) ...
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Which statistical test is more appropriate?
I have collected data for an experimental study from 88 participants. Specifically, all participants received both interventions but in a different order. 44 participants received firstly Treatment A ...
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PERMANOVA - small and unequal sample sizes
I am comparing fish communities at 2 sites (upstream vs downstream) with data collected in two seasons (wet and dry) over several years (2017-2022), with data from the first pair of wet and dry ...
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MANOVA (SPSS) test - determine control variables in moderation analysis
I am examining the moderating effect of IV1 in the relationship between IV2 and DV using hierarchical regression analysis. The study has 2 demographic variables: gender and age. To determine if it is ...
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Can I run a Manova after conducting a cluster analysis?
So my study intends to conduct a cluster analysis using 2 variables (RP and AP).
I intend to find four clusters (AC, BC, CC and DC).
I would then like to examine differences in education, height, age, ...
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How to use the effects output of a MANOVA model to calculate BLUEs? (without an intercept)
So my team wants a single best linear unbiased estimate (BLUE) using 2 response variables. I have asremlR and here is my code to produce the model:
...
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Best approach to finding a statistical significance within the data
$\textbf{Description of Dataset:}$
I've got a dataset where 3 mice per cage are fed a certain diet. There are 3 diets and a control diet (4 diets all up), and 3 cages tied to each diet, so 36 ...
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Am I (reviewer) correct or is the researcher correct re: Bonferroni?
I've been asked to review an article for a low-tier journal, such that I am the only reviewer with stats knowledge (such as it is; I used to teach stats and advanced stats, but it's been a few years ...
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Suitable test for data with multiple categorical dependent variables?
I have a dataset with multiple independent variables (time being one of them, so repeated measured) and multiple ordinal dependent variables that have 3 grades for each (like grade 2 for being ...
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Multiple post-hoc tests after Multivariate GLM/MANCOVA
I have three groups, where I am doing a multivariate GLM/MANCOVA to test for multivariate differences between groups (6 DVs), adjusting for 2 covariates. I would like to do post-hoc tests to see which ...
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Comparing two participant groups on multiple likert scale response options in exploratory study
Hi I am new to CrossValidate so wanted to thank anyone in advance for contributing and looking at my questions.
I am presently reviewing data from an exploratory study where two groups of participants ...
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A non parametric equivalent to MANOVA
I would like to investigate whether there are significant differences between three different groups. There are about 20 numerical attributes for these groups. For each attribute there are about a ...
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MANOVA Repeated Measures
I hope somebody can help me with my confusion.
My dependent variables are: emotions, interest, and attitude change, while independent variable is type of message: a) self-appraisal message b) family-...
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Why repeated measures output gives different output than MANOVA (SPSS)?
I see that this topic was closed few days ago, because it concerns specific context (data). No actually it does not. This is something that happens with any two variables that u have (at least 2) and ...
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What type of analysis to do for Dissertation- EMOTION RECOGNITION
In my study, participants take part in the State Trait Anxiety Inventory (STAI) where they are ranked into high or low trait anxiety groups.
Participants are then shown multiple videos of 7 different ...
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How to account for mediators in ANOVA?
So I have two IVs (customization, purchase type), three mediators (self-expressiveness, social connections, evoked comparisons) and one DV (happiness). Purchase type is either experiential or material,...
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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 ...
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G*power -> MANOVA (global effects) confusion with given effect size
I'm working with G*power to calculate the sample size for my experiment.
At the moment I'm a little bit confused handling the effect size values.
I have 3 IV (3 groups) and 2 DV => so i will use ...
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Testing differences between groups in time course experiment
I want to analyze my data of glucose tolerance test experiment.
I have two groups- test and control, and we measured the glucose levels at 5 time points (0,15,30,60,120 min).
I want to test for ...
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Choice of test in a pre-post scenario
I would like to test whether there is a significant difference in outcome in a pre/post scenario.
I have the following set-up:
Measured level of concentration of A (...
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2x3 Mixed Factorial Design or Pre-Post Design?
I am conducting a study for a MSc., and was told by my supervisor that my design would be a 2x3 mixed factorial design, but it seems like it might just be a pre and post test intervention design (I ...
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Test for paired proportion data
I want to test for differences in the connectivity of two different brain regions (A and B) measured in 100 subjects. For each brain region, I have measured connectivity to 150 other brain regions (i....
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No significance in the multivariate tests
Hope this question is not too stupid. I haven't taken the MANOVA course yet, but I need to figure out a problem right now. I am running a mix-model MANCOVA on SPSS.
I have no significance in the ...
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Would a repeated measures MANOVA be appropriate for a 9DV, 2IV within subjects study design?
I am trying to get an estimate of participants to strive for in my study. Being rather new to the research and stats scene, I was hoping the community could help me out a little bit?
The study has 9 ...
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Whither multivariate regression?
I've been handed someone else's data (again). It's measurements of six proteins' levels from 20 human brain samples, 5 each of different stages of a disorder. I'd like to run a multivariate regression,...
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Does ordinal logistic regression substitute for "multifactorial Friedman test"?
I'm searching for an appropriate statistical test, more or less a multifactorial version of Friedman test. But I'm also wondering if Wilcoxons rank sum test can do the job.
Experimental design:
10 ...
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How to perform MANOVA with categorical independent variables
I have a dataset where the independent variable is sieve size (categorically either 25, 63, 100 or 150), and the dependent variables are length and width.
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An Interesting Model with Unknown Orthogonal Design Matrix
Consider a linear mixed model,
$$\mathbf{y}_{ij}=\mathbf{\Gamma}\mathbf{\mu}+\mathbf{z}_i+\mathbf{e}_{ij}, ~~ ~~i=1,\ldots,m,~~j=1,\ldots,n_i,
$$
where $\mathbf{y}_{ij}$ are $k\times 1$ observation ...
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Find significantly differences between multi-variant groups
I have 11 groups, each consist of about 200 observations, and each observation has 2 variables (which are actually the first two PLS components if it makes any difference). Each group is a substance ...
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What statistical test should I use for my data set?
I have a data set on 20 patients. These patients were administered a cognitive test over the duration of their stay in an inpatient clinic. The cognitive test measured 5 different outcomes (like ...
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Two-way MANOVA - No significant multivariate interaction - can I still interpret univariate interaction?
Assume that a two-way mixed (two independent variables (IVs)) MANOVA was conducted. The multivariate interaction effect of the two IVs on the dependent variables (DPs) together was not significant. ...
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Need help with my MANOVA
First a short description of my dataset:
I have 8 independent binary variables with the values 0 and 1 (say something about characteristics of the subject line of an e-mail)
I have 7 dependent ...
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ANOVA or multiple regression? longitudinal study
I'm doing a longitudinal study of healthy patients (so I'm studying them over time ... say at age 7,8,9,10,11,12)
I think my independent variables would be: Age (continuous) and sex (2 categories)
...
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Python ANOVA or MANOVA
I have a datasets with samples from various locations. At each of these locations I measured the concentrations of various genes. I saved the results in pandas dataframe and would like to compare the ...
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Is there a specific test for correlation between 2 measurable variables between nominal data?
I am having a hard time finding a comparable test for my data set. Here is what I have: weight of individuals and Concentration of a trace metal in each individual for 8 field sites.
I want to see if ...
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How to compensate for unequal sample sizes in multivariate tests?
I have several linear and geometric cranial variables of specimens sampled from about 20 different localities. The sample sizes per locality range between 9 – 100. What would be the best multivariate ...
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What type of ANOVA design to conduct?
The scenario is as follows: I want to compare engagement of users when they are exposed to two types of product (black and white imagery and colorful imagery). Engagement consists of 4 different ...
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Responding to reviewer concerns re: MANOVA
We conducted a study examining how individuals rate other individuals ("targets") on the basis of information about their exercise status. The IVs are rater exercise status (low, medium, high) and ...
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Mixed-ANOVA Design - Assumption
1) In a Mixed-ANOVA design, with one-between subjects (2 levels) and one within-subjects test (2 levels), do we normally check the Levene's output to ensure that we are not violating the assumption of ...
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may i use multiple t-tests to examine group differences?
I've got a critical comment on my recent manuscript on cultural comparisons. There were two different samples depending on collection method (classroom vs. online) in both culture A and culture B. So ...
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Repeated measures with adonis in R
I have the following experimental design: 9 mice (mouseID) were assigned to three different treatments (n=3 per treatment level) ...
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Variance and regression of binary repeated measures
For my research I have asked the same binary question (yes/no) to the same sample five times under different conditions. So every subject goes through every treatment. I have used a McNemar Chi-Square ...
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Response surface Analysis.Analysis of Variation using MATLAB
How can I do Analysis of variation(ANOVA) and Response surface analysis for two factors on a 3 dimensional(17x3) input and corresponding 17x1 output data using MATLAB? If i could get required codes ...
