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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3x2 design - data analysis ANOVA/MANOVA? How to add interaction in the model?

Discription of experiment I am researching "The effect of review valence and brand commitment on consumer's purchase intention" for my university thesis. I conducted a 3x2(no review/positive ...
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Which analysis is appropriate when there are categorical and ratio variables?

There is a preliminary demographic questionnaire that has items like: age, gender, proficiency level, platform preference, number of hrs/week. In addition, there are other instruments in this same ...
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How to perform this ANOVA?

I am interested to know if we have 3 dependent variables, and 2 independent variables, online and face to face, with 2 levels each, as in the example below. The sample size is 30 for each mode of ...
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19 views

Significant box's test equality covariance matrices, How bad it is?

Having equal number of cases across two groups (60 total cases), if one wants to perform a split-plot Anova and finds out that the Box's Test of Equality of Covariance Metrices is less than 0.001 then ...
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41 views

Does one need to adjust for multiple comparisons when using MANOVA?

There are 10 dependent variables and 2 groups. When I wanted to compare 10 dependent variables between two groups, I performed MANOVA. I wonder if there is a multiple comparison problem in that case. ...
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MANOVA, when independent variable is not multi-level and P value significance variance [duplicate]

My research has 4 independent variables and 4 dependent variables. My hypotheses are constructed in such a way that 1 independent variable's effect size is checked on 4 dependent variables. My ...
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21 views

how can i use regression model selection technique and to carryout ANOVA for calculated data [duplicate]

how can i use regression model selection technique and to carryout ANOVA for calculated data I have problem regarding to know , what kind of relationship is excised between parameters to produce a ...
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44 views

MANOVA, when independent variable is not multi-level and P value significant in MANOVA but not in ANOVA

My research has 4 independent variables and 5 dependent variables. My hypotheses are constructed in such a way that 1 independent variable's effect size is checked on 5 dependent variables. MANOVA is ...
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96 views

Does one lose information or precision when calculating effect sizes from statistical values rather than from the raw data?

Let's say that I want to compute the effect size of a certain intervention, for which I have both the raw data and some statistical value that can be transformed to an effect size. For example, if one ...
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28 views

one-way MANOVA effect size interpretation

I'm having problem understanding effect sizes in one-way MANOVA model. In my case, I'm having a 13 variables which I used for clustering and then the produced ...
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3answers
183 views

ANOVA shows no significant interaction effect, but Tukey's Test shows significant differences between groups?

I am a PhD student but I am having a hard time understanding certain aspects of statistics. I just ran an ANOVA and I got no significant interaction effect between Density (0 and 20) and Species ...
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23 views

Using MANOVA for classification without separating training and test sets

In this study: Rosenblum, Sara, et al. "Handwriting as an objective tool for Parkinson’s disease diagnosis." Journal of neurology 260.9 (2013): 2357-2361 The researchers attempt to classify ...
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57 views

Which statistical analysis replaces MANOVA when there are too many dependent variables?

I want to understand if an experiment gives equal response at two different levels of an experimental parameter. What I did was to repeat the experiment 6 times at the first level of the parameter and ...
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19 views

MANOVA or repeated-measures ANOVA? [duplicate]

thank you very much for your time! I am currently working on a neuroimaging study comparing lateralization indexes between the two hemispheres in three different groups. I have 4 lateralisation ...
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31 views

Manova Repeated measure?

I am making some marketing research for a new ready to drink product. I want to measure consumers expected quality and experienced quality. Therefore consumers are to answer questions abut the ...
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1answer
62 views

How do I compare two groups by several dependent variables and get 1 p-value as a result?

Suppose I have two groups and several dependant variables. I would like to show statistically whether the two groups are different or not, based on the combination of these dependant variables. The ...
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128 views

How to work out Effect Size for a MANOVA using G*Power

I'm using G*Power to work out how many participants I need. I'll be using a MANOVA, I have two independent variables (Male and Female) and they will be answering 13 different questionnaires so 13 ...
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188 views

How is MANOVA related to LDA?

In several places did I see a claim that MANOVA is like ANOVA plus linear discriminant analysis (LDA), but it was always made in a hand-waving sort of way. I would like to know what exactly it is ...
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Assessing group differences on multiple outcomes

I have one independent variable with two levels: Gender (Male and Female), and dependent variables will be composed of three test scores: Impulsivity, Assertiveness, and Social Desirability. My ...
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Determining if experiment data can be pooled from multiple experiments

We have a dataset with Time and Treatment as independent variables, and growth volume as a dependent variable. The experiment was repeated on three occasions, with multiple time points and multiple ...
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68 views

Group-Time interaction from MANOVA in R?

I'm practicing MANOVA with R. I have a data (perhaps famous) called 'rat-weight data.' ...
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52 views

Regression or Manova?

I have the following problem: I have one manipulated IV (degree of co-creation) based on three surveys "no" "low" and "high" degrees of co-creation. Furthermore I have 4 DV (Purchase intention, ...
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1answer
207 views

Difference between MANOVA and two-way ANOVA

I have read the articles of both of these statistical methods on wikipedia, and as far as I can tell they are used in the same cases. I could not tell in how far they work the same way, since the ...
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41 views

MANOVA for count data

I'm comparing two groups where each individual was tested on 9 response variables. These variables are a count with an upper limit of 2 (it's a count of missing copies, and max number of copies is 2). ...
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90 views

MANOVA with unequal sample sizes

I have data for 352 response ratings that have been categorized as "Low," "Medium," and "High." I would like to compare the differences of five variables across the three categories to see which ones ...
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25 views

Methodology for finding source of MANCOVA interaction

I am trying to find out the best method for determining the source of a significant MANCOVA interaction. I have 17 traits measured for four locations. Is there an alternate to univariate ANCOVAs ...
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Two groups measuring their blood conc… significance between two group and time?

hello I am doing analysis on a research and need to do the following We have two groups (control and patient) we are measuring their blood concentration every 10 minutes for 48 times (repeated ...
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76 views

MANOVA multivariate normality

I'm running some analysis of student data and I'm having some questions regarding multivariate normality assumption of MANOVA. Should it be done using values of dependent variables or their residuals? ...
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99 views

What is the intuition behind (M)ANCOVA and when/why should one use it?

As per my understanding here's the what/why/when of the following hypotheses tests in a crude sense: t-test: Used when comparing means between two samples ANOVA (one way): Used when you have one ...
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Treatment Effects: Manova

Suppose we are measuring blood pressure three times a day for two treatments $A$ and $B$. 10 people are getting treatment A and 10 people are getting treatment B. Also suppose we find that there is a ...
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29 views

Two independent groups and three dependent variables

How do I test for differences between two groups on three dependent variables? Is that an ANOVA or multiple t-tests with an adjusted alpha level?
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67 views

A construct as an independent variable?

I know that you can have a construct as a dependent variable: MANOVA or MANCOVA. Is it possible for me to have a construct as an independent variable? I have a construct that consists of 3 variables ...
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68 views

Outlier detection across multiple conditions?

-----EDIT: Sorry, I was somewhat in a hurry when I wrote my question. Let me rephrase it. I intend to conduct a Mixed ANOVA analysis consisting of a Repeated Measures DV and a between-subjects IV (a ...
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292 views

What particular measure to use? Multiple regression or MANOVA?

I've been doing a research paper - Effects of Workplace Bullying on Employees' Productivity, Self-Confidence and Self-Esteem. So I have 1 IV (Workplace bullying) and 3 DVs. what can I use to ...
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491 views

How do I interpret hierarchical regression results?

How do I interpret hierarchical regression results?
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Proper methods for this case of repeated measures?

I am measuring hormone changes in animals. I have three groups: Groups A, B, and C. In each group, blood was collected from the SAME individuals for hormone assay at 0, 15, 30, and 60 min. This was ...
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Questions about Factorial MANOVA

I have a few questions about the factorial MANOVA below which I hope can be answered: 1)What type of follow-up tests should be done after finding significant interaction effects in a factorial ...
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Is MANOVA appropriate?

So I've been reading various online tutorials and I've not come across and example which is similar to what I'm trying to do. I've thought up this example because I was struggling to explain with ...
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117 views

Ordinal logistic regression to find support for inverse proportionality of a continuous predictor on an ordinal dependent variable

I want find statistical support that dependence is inversely proportional to power. To do so, I have ~260 cases, with four questions about dependence, and one question about power The questions ...
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Finding interaction between several factors and multiple dependent variables

Asking a question essentially for a colleague, since it's far enough afield of what I do that I want to make sure I don't lead her astray: Assume a study with 5 factors and 3 dependent variables - ...
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48 views

ANOVA type for dependent samples through time

The problem is how best to analyse data which involves multiple dependent measures, taken on multiple/repeated occasions and determine whether there's a difference between two groups. I'm trying to ...
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123 views

How to interpret the overall statistically significant effect of a MANOVA (In words)?

I have the following analysis: I ran a MANOVA with two DVs (both empathy scales) and an IV (gender). Now the $p$-value (.03) tells me that there is a significant difference between men and women. ...
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348 views

How to interpret the SPSS output for MANOVA?

I am struggling with the interpretation of my MANOVA in SPSS. I have two DV and one IV (age), in the MANOVA table Wilk's lambda is .053, thus not significant at a alpha level of .05. When I then look ...
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In a Multiple regression analysis (2 DV and 5IV)- can i run the analysis with only one DV transformed and the others in their original form?

i would like to run the following regression: 2 DV out of which 1 is in its original form and one is transformed (due to non-normality) to a squared transformation. Can i still run this regression or ...
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R's MANOVA homoscedasticity assumption

Does R's manova function assume homoscedasticity among all outcomes or only among the subgroups (according to the predictor) of each outcome?
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Behavioural economics experiment - non parametric test

I wonder if somebody could help with my dissertation project. I am stuck with the analysis and tried to consult a few people but unfortunately they either have limited experience, knowledge or ...
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50 views

Arranging a dataset for a 2-way between-subjects Mancova

I'm not quite sure whether my dataset is correctly arranged in SPSS to run a Mancova. I have got two pairs of categorical IVs, 9 measures (variables) for one pair of IV and 12 for other categorical ...
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Number of dependent variables

I have data from raters who each provided two ratings for a large set of categories. They were asked to rate how coherent each category was on a scale of 0 (members totally dissimilar) to 9 (members ...
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86 views

Why is it possible to have a non-significant MANOVA but multiple significant univariate ANOVAs?

The only source I have for this being possible is http://en.wikiversity.org/wiki/Multivariate_analysis_of_variance, but this page does not explain why it is possible.
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Setting up data for MANOVA in SPSS

I do not understand how to arrange my data in SPSS for running MANOVA. I have 6 groups of participants that have rated 100 pictures on 3 different dimensions (dim1, dim2, dim3). What I don't ...