MANOVA is the acronym for Multivariate Analysis of Variance. This is a generalization of ANOVA for the case where there are multiple dependent variables.

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how should i interpret boxplot and manova results simultaneously?

I have a data in which i am interested in how the response of photosynthesis and conductance varies differentially among different temperatures/ranks/crosses/genotypes. I have set up a manova to do ...
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19 views

Working on my dissertation, and need to figure out whether to use MANOVA, MANCOVA, Multiple regression, or multivariate regression

I am working on my dissertation, and I am having a hard time choosing a statistical model to follow. I am using an existing dataset. The results of the dataset are self-reported. There are more than ...
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23 views

Optimal model/statistical test for my design?

I have a design with 1 between-subject factor and 2 within-subject factors as independent variables and 5 dependent variables (longitudinal accelartion, lateral acc., response time, first conscious ...
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14 views

How to run ANOVA on multiple groups of samples, each composed by different variables

I have a $m$ x $n$ matrix, where the $n$ columns are split into multiple classes. If I had only a $1$ x $n$ vector, I would have used ANOVA to evaluate if all subset of columns had the same ...
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29 views

What is the best approach for this set-up: RM ANOVA / MANOVA / Mixed-Models?

I have a simple dataset from a within-subject design. Each participant provided a verbal description of 3 stimuli. The descriptions were coded so that they consist from objects each belonging to 1 out ...
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16 views

Using PCA and MANOVA to assess similarity of twins

the general answer to my question has been provided before ( Test if paired data are more similar than non-paired data ), but I'm very much out of my depth and would like to know if my implementation ...
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47 views

MANOVA multiple comparisons with equivalence testing

For a MANOVA with $n$ variables, I would like to do pairwise comparisons between $k$ levels for one of the variables. What is the suitable method to adopt for ...
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45 views

How to statistically validate a Framework?

I am creating a Framework, that has independent variables A and B. It has dependent variables C, D, E. F, G, as shown in the diagram. Framework I understand that only after validating a Framework we ...
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29 views

Analysis for a repeated measures design with covariate that varies over conditions?

I'm trying to find the correct analysis that will allow me to carry out the equivalent of a repeated measures MANCOVA with a covariate that varies over three conditions. Basically I have an experiment ...
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23 views

Two-way MANOVA - Total Effect of Independent Variables on Response Variables Together

I have run a two-way MANOVA in SPSS. In the model, there are two fixed (independent) variables A and B, and two response (dependent) variables X and Y. I am trying to ascertain the total effect of A ...
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37 views

Discrimination between measurements made at different points in time

I would like to ascertain what variables discriminate best between experimental conditions in a repeated-measures experimental design. I have performed Repeated Measures MANOVA to determine whether ...
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26 views

Clustering MVT response data by audience

We are doing multivariate testing 4 possible values for each of 3 variables on a landing page: (a) offer presented, (b) product claim message displayed and (c) image used. So, 12 dummy variables, 64 ...
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16 views

Analyzing Social Behavior in Bats

I had a question about what might be the best way to approach one of my datasets. I had been using one method, but a recent talk with one of my professors made me think that perhaps it wasn't the best ...
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35 views

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 ...
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15 views

Confusion over MANOVA and Regression for my research study

I have a research study that I am planning but I am a little confused as to what kind of analysis I should be doing. On that one hand, I thought MANOVA. On the other, some other people think it is a ...
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22 views

Repeated measures for more than one variables

I wish to check if the covariate IVs $X_1$, $X_2$, $X_3$, have a significant effect in the way that the DVs $Y_1$, $Y_2$, $Y_3$ differentiates over time between two time points (2012, 2013). I have ...
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14 views

Determining the effect size using GPower

I have three ponds and would like to know how many random samples of algae I need to collect within each pond measuring 7 response variables. I would like to see how each pond responds to the 7 ...
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12 views

Mixed within-between ANOVA or MANOVA? [duplicate]

I am doing a research, the instrument of which is an English proficiency test that consists of two parts: one part is related to the test-takers' field of study and one part is unrelated. my ...
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20 views

MANOVA on autocorrelated variables

I am trying to find out if signals 1 and 2, can explain signals 3 to 10. All signals are continuous and time-varying and are rather strongly autocorrelated. Signals 3 to 10 (my dependent variables) ...
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211 views

What is the null hypothesis of a MANOVA?

Background In order to analyze differences in some continuous variable between different groups (given by a categorical variable), one can perform a one-way ANOVA. If there are several explanatory ...
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29 views

PERMANOVA Design

My aim is to quantify temporal change in community composition by measuring community composition through time at several plots using randomly placed quadrats. The idea would be to repeat surveys at ...
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1answer
64 views

how to test the significance of a multivariate, multiple regression model as a whole

I have a dataset with seven dependent variables and three independent variables. Now I want to test the significance of a multivariate regression model as a whole. My model looks like this (using ...
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22 views

Statistical technique for data when three interventions are administrated and multiple responses measuring different constructs are measured

I have a data where three interventions were administrated on subjects and different response variables (say 15 variables) on Likert Scale were observed. These response variables measure three ...
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241 views

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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28 views

Comparing differences between overlapping groups

I am trying to analyse the differences between people who vote in the European Parliament (EP) elections and people who vote in national elections, based on the EES dataset (http://eeshomepage.net/). ...
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190 views

How can MANOVA report a significant difference when none of the univariate ANOVAs reaches significance?

I would just like to ask if it is normal for the values from my multivariate tests to be significant but for the values from my univariate tests of between-subjects effects table to be insignificant. ...
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81 views

Split-split plot design (with replicates) with repeated measures

I'm looking for references that can guide me with regard to the analysis of a split-split plot design (with replicates) that also has repeated measures over time. Ultimately, I need to be able to: ...
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447 views

How to do MANCOVA in R?

I have two groups of persons, GRP0 and GRP1, on which I measured three continuous variables: VAR1, VAR2 and VAR3. I would like to use Mancova in R with: - VAR1, VAR2 and VAR3 as outcome variables - ...
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Compare model performance to distinguish two groups

I would like to compare a sample from the normal population NP to a sample from an "abnormal" population AP. I have several variables measured on both NP and AP, say age, gender, and VAR1, VAR2 and ...
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How to statistically test if two continuous variables can combined to be proxies of one categorical variable? MANOVA?

In the dataset I have, there's one categorical variable (A) containing multiple levels. Due to multiple reasons, I want to use continuous variables only for modeling. I feel two other continuous ...
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28 views

Likelihood function for MANOVA

I'm trying to get a handle on MANOVA and Repeated Measures ANOVA. My confusion is around what the likelihood function looks like. Here's how I would formulate the likelihood function Notation: The ...
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39 views

MANOVA on long data format

I need to run repeated measures MANOVA on long data format (the format was created to derive a categorical variable that is needed to be used as IV). Running RM MANOVA on long data format using a ...
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192 views

Simplifying explanatory model using Vegan adonis in R

I am a newbie to multivariate statistics, so please forgive me if this question is naïve, or if I have missed something important. I'd like to know whether it would be valid to approach using adonis ...
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76 views

Estimating and comparing pre-post treatment effects in multiple pairs of treatment-vs-control groups

I have a dataset from an experiment where the goal was to study in which plant ecotype a treatment with a certain bacteria had the greatest effect. Hence the data consists of a number of control and ...
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67 views

MANOVA when sample size is smaller than the number of DVs

I need to compare $16$ quantitative variables, measured for two groups, A and B. I thought of applying MANOVA. However, there are only $4$ and $9$ cases for groups A and B respectively. I looked for ...
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Multiple binary dependent variables

I want to model multiple binary outcomes with some predictors. Does MANOVA can handle this or is there any other techniques I can use? Thanks !!!
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124 views

How can MANOVA report a non-significant p-value while LDA results in perfect separation of two groups?

I am new to statistics and currently got a dataset which contains $80$ dependent variables and $1$ independent variable with $2$ groups. MANOVA reports a $p$-value of $> 0.6$ on this dataset. But ...
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193 views

How to best approach ANOVA with multiple response variables that might be correlated and Bonferroni Correction

I need some help verifying a simple analysis. I have completed a simple two factor experiment of more or less equal sample sizes. Let's assume for the case of this question that the sample sizes are ...
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25 views

Do I use ANOVA or MANOVA and why

I have a project for my thesis with both between groups subjects and within groups subjects. The independent variable is the program I am running and the dependent variable consists of 6 different ...
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1answer
164 views

Test(s) For Comparing qPCR results / ΔΔCт values

To be clear, I'm talking about real-time polmerase chain reaction (qPCR), not Principle Component Regression. Though from a company selling qPCR reagents, here is a good walk-through of the ...
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62 views

Pre-Post analysis

I want to compare Pre-Post measures (the event is induces MI in lab rats) for 3 groups (it's always same groups for different pre-post MI measures. At the beginning i was thinking that the appropriate ...
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1answer
100 views

How can I run an analysis of variance with one independent variable and multiple dependent variables?

From my limited statistical knowledge, I could use MANOVA if I had multiple independent variables (x1, x2...xn). What can I do (specifically in R) with one "x" variable and multiple "y" groups? I'm ...
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Many dependent variables, few samples: is this an example of “large $p$, small $n$” problem?

"Large $p$, small $n$" typically refers to "many independent variables, few samples". In my case, I have $1$ independent variable, $300$ dependent variables, and $n < 20$ samples. Thus, my case ...
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2answers
92 views

Confidence interval for $\eta^{2}$ for MANOVA in R

I have to report the Confidence Intervals for the $\eta^{2}$ obtained in a MANOVA in R. I use the function etasq of the package heplots to obtain the $\eta^{2}$. ...
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74 views

How to predict 4 dependent ordinal DV from 6 ordinal/nominal IVs

My question is simple. I got 4 ordinal variables and I wish to investigate the extent that other 6 ordinal/nominal variables predicts their values. I know that ordinal regression is the appropriate ...
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Follow-on to “Training with the full dataset after cross-validation” - sequential parameter estimation

Background: Here is the background for the question, both the question itself and the answer given by Dikran Marsupial. Training with the full dataset after cross-validation? It asks about after ...
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1answer
51 views

Confused about which variables should be dependent and independent in this MANOVA

I am currently doing research on social media and how it can effect depression, anxiety and stress scale (DASS) scores. I have two age groups (18-25, 26-35) and also took scores on narcissistic ...
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1answer
106 views

R Error in manova(classification ~ ., data) : need multiple responses

I'm trying to get a MANOVA running to get Wilk's Lambda from the summary but I get a constant "need multiple responses" error. Looking at past answers I figured that one of the variables might be ...
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247 views

Significant output in Levene's test for equality of variances in MANOVA; what to do?

I want to perform a MANOVA in SPSS as follows: i have a independent variable that consists of three groups (- of which the group sizes are not equal), and six dependent variables. When checking the ...
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Non Significant MANOVA but significant OLS regression

I have data which is showing a $p$-value of $0.15$ significance value within a MANOVA (including a significant planned contrast). However, when I dummy code and put it into an OLS regression, the ...