Questions tagged [manova]
Multivariate ANalysis Of VAriance (MANOVA) is a generalization of ANOVA for the case with several dependent variables.
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Non-significant MANOVA with significant planned contrasts [duplicate]
Possible Duplicate:
Not-significant F but a significant coefficient in multiple linear regression
How can you have a non-significant multiple regression model w/ significant predictors?
My ...
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Repeated measures ANOVAs instead of repeated measures MANOVA w/ small N?
I have 3 variables that have been measured on 4 occasions and a sample size of 16. I was considering a repeated measures MANOVA to ascertain if the changes over time were statistically significant. ...
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MANOVA with repeated measures in R, error [closed]
I conducted listening experiment in which 16 participants had to rate the audio stimuli along 5 scales representing an emotion (sad, tender, neutral, happy and aggressive). Each audio stimulus was ...
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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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Is there a generalization of Pillai trace and the Hotelling-Lawley trace?
In the setting of multivariate multiple regression (vector regressor and regressand), the four major tests for the general hypothesis (Wilk's Lambda, Pillai-Bartlett, Hotelling-Lawley, and Roy's ...
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Variables which sum to a constant - ANOVA, MANOVA or none of these?
I asked a group of subjects to make a series of 12 binary choices regarding preferences.
Let's say for arguments sake, these were between ugly (ug), attractive (<...
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What statistical test should be used to accomplish the objectives of the experiment
I'd like to have your feedback to analyze my data from the following experiment.
Experiment Information
A total of 30 (15 from one city and other 15 from another city) slaughtered animals were ...
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How do you report significant contrast results for a MANOVA in APA style?
Do you just report that MANOVA significance test is significant, or do you have to include contrast estimates (SPSS K MATRIX)? In the latter case, what are ...
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Two DV's in a 2x2 factorial experiment
I'm trying to investigate the effect on (a) tear resistance and (b) gloss of a piece of film due to additive and extrusion method. I can see that the best results for tear resistance is low additive ...
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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 ...
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Permutational MANOVA and Mahalanobis distances in R
In this paper
Anderson, M.J. (2001). A new method for non-parametric multivariate analysis of variance. Austral Ecology, 26, 32–46
I found very useful MANOVA approach that can, to some extent, ...
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How to interpret type I, type II, and type III ANOVA and MANOVA?
My primary question is how to interpret the output (coefficients, F, P) when conducting a Type I (sequential) ANOVA?
My specific research problem is a bit more complex, so I will break my example ...
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Over enthusiastic MANOVA in R
In recent research I pursue a MANOVA model on a dataset comprised of 50 measured characters and several grouping factors that I need to test. When I use something like this
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Understanding MANOVA in case of a single predictor
I'm trying to understand the statistical analysis I saw in a clinical study. They measured performance of 3 groups of subjects with a series of performance measures (A, B, C, ..., N). The objective ...
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Dealing with nuisance variables in a MANOVA situation [closed]
I have a study in which participants facebook profiles were rated by a group of students. The participants were then randomly allocated into one of three groups: the uncertain condition (where they ...
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Is VAR a MANOVA with auto regression?
What are the differences between VAR (vector auto regression) and MANOVA?
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How to examine differences between two groups across three different experimental conditions?
I have data for two groups. The 2 groups are matched on a number of variables, but differ in the scores on an alcohol measure (one group is high, and one is low). However the groups have been created ...
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Does the importance of the normality assumption in MANOVA decrease as sample size increases?
Does the importance of the normality assumption in MANOVA decrease as group sample size increases?
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How to develop a model predicting quality of life from a wide range of demographic, stress, and health measures?
Context:
I am running a large survey and am trying to figure out what statistical analyses to perform.
The survey asks questions in every format known to man (e.g., likert scales, multi-choice, ...
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Non-normality in MANOVA with significant planned contrasts versus non-significance in Kruskal-Wallis- A Conundrum
I am conducting a between groups analysis for 3 groups (N=26, one control group and two experimental groups) with 4 dependent variables. I initially planned to conduct a MANOVA, however I am not ...
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Differences between MANOVA and Repeated Measures ANOVA?
What is the difference between a repeated measures ANOVA over some factor (say experimental condition) and a MANOVA?
In particular one website I stumbled across suggested that MANOVA does not make the ...
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How to deal with non-normality in MANOVA? [closed]
The dependent variables (DV) have to be normally distributed. I have a problem because some of them aren't. I have one independent variable (IV), namely type of education. The DV's are Externalizing ...
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How to describe a design with a mix of experimental conditions, predictor variables, and multiple outcome variables?
My research design is as follows:
I have these Between Subjects IVs:
Experiment Condition - 5 levels
Facebook User status - 2 levels (yes/no)
My supervisor also wants me to see if there are ...
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Tutorial for performing Contrasts for MANOVA
Context
I have a multivariate dataset with a test group and three control groups.
I was thinking that the best way to determine if and how the test group differed from all of the control groups would ...
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Multivariate multiple regression in R
I have 2 dependent variables (DVs) each of whose score may be influenced by the set of 7 independent variables (IVs). DVs are continuous, while the set of IVs consists of a mix of continuous and ...
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Is MANOVA the correct way to handle multiple response variables that are additive?
Context:
I am trying to analyze an experiment on plant community response to two treatments. Here’s a simplified description of the experiment, there are a few extra complications in reality.
...
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Repeated measures with correlated measures (not time)
Most repeated measures ANOVAs have time as the repeated measure; I was wondering about using a repeated measure that is not time.
Say we fed two groups of animals different diets. At the end of the ...
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Consequence of violating independence assumption of ANOVA
I would like some help with the following problem.
I have 40 subjects. On each subject I take a measurement at 25 body
sites. The measurement is a continuous variable that varies between 0 and 1 and ...
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MANOVA and correlations between dependent variables: how strong is too strong?
The dependent variables in a MANOVA should not be "too strongly correlated". But how strong a correlation is too strong? It would be interesting to get people's opinions on this issue. For instance, ...
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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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A non-parametric repeated-measures multi-way Anova in R?
The following question is one of those holy grails for me for some time now, I hope someone might be able to offer a good advice.
I wish to perform a non-parametric repeated measures multiway anova ...
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