Questions tagged [manova]
Multivariate ANalysis Of VAriance (MANOVA) is a generalization of ANOVA for the case with several dependent variables.
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What post-hoc steps to take after nonparametric MANOVA with binary dependent outcome variables?
I am conducting a nonparametric MANOVA to see the effect of Group on each of the four binary response variables (DV1, DV2, DV3, DV4) after controlling for a covariate Cov1 (One-way MANCOVA) using ...
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How does one create comparable metrics when the original metrics are not comparable?
The problem I have is that I have several groups (say 3 to make discussion concrete) with observations from a true but known distribution $p^*_1, p^*_2, p^*_3$ (or 3 populations). I can compute some ...
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Mahalanobis Distance critical alpha cutoff [closed]
I have two predictors and five dependent variables. I'm trying to figure out what the critical alpha cutoff for Mahalanobis distance is for a model with 5 DVs to check for assumption of multivariate ...
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Factorial dependent variable
Let's say that I want to measure the features of episodic memory, and I have three domains ( specificity, content, and detail) - how to measure statistically a dependent variable with different ...
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MANOVA or multiple regression, multivariate regression?
I am looking at the association between feature [ vividness, content specificity, and content narrative] - to three variables on the levels of Depression ( 4 levels - normal, mild, severe, and very ...
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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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How do I explicitly calculate feature importance and influence over multiple tests?
I have a time series model I am trying to evaluate with 3 years of training data, then the last two years split into sequential validation and testing sets.
I have a combinatorial test where I have ...
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How to use PERMANOVA with non-numeric Y in the formula
I did a MANOVA in R from 10 PCA dimensions I extracted from the result of that analysis with this code: manova_ <- manova(cbind(Dim.1, Dim.2, Dim.3, Dim.4, Dim.5, Dim.6, Dim.7, Dim.8, Dim.9, Dim.10)...
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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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Sample size estimation in MANOVA (G*Power) - number of groups and sample size needed
I am going to conduct an experiment with three follow-up measurements. During making simulations of the needed sample size in G*Power, I have found a confusing result...
I have chosen MANOVA (Repeated ...
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MLR and MANOVA with a Correlational Predictive Design?
A very silly question, I am sure. However, can a MANOVA be considered a secondary analysis to MLR as part of a correlation predictive design?
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How to handle variables with different measure points in Two-way repeated measure MANOVA in R
I'm comparing two treatment conditions (my IV) on 6 DVs. I'm trying to run a two-way repeated-measure MANOVA, and one of my DVs was measured three times (at t0, t1, and t2) and other DVs were measured ...
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What Type of Test Should Be Used to Determine Between-Group Differences with 2 Separate Conditions?
I've been working on a project where I've generated a multivariate graph of the error of a filtered image from a pure signal for four different types of frequency filters and two varying conditions (...
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Why does PAST-software give me a p-value of 0 for MANOVA
I conducted the MANOVA Test for Coverage of 33 species on 4 different sites. As PAST does not let me to have more variable coloumns than group colouns, I needed to add 10 observations on each site (I ...
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One-way ANOVA for multiple features?
I have 60 continuous features (i.e., lab results) for 35,000 patients, and the patients are divided into three groups. I want to evaluate each feature to find out what the differences are between the ...
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Comparing two datasets with many descriptors
I am not quite sure how to go about this test. Basically, I have a set of 20 samples, of which I have one desirable outcome variable - conductivity which ranges from 0 to 222. For each of these ...
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Sample size for MANOVA decreases as number of groups increases
I'm using G*Power to calculate the sample size for MANOVA. As the number of response variables increases, the sample size decreases. I keep all the parameters the same for the alpha, F-square, etc, ...
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Testing Independent Variable Significance Combinations on Dependent Variable
I am trying to see which variables and combinations of variables have the most significant impact on a dependent variable.
The data looks like so:
There are five independent variables:
Shipyard (A, ...
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Would I use a one-tailed paired-sample t- test on this?
I am doing an assignment that tests whether acceptance and commitment therapy is beneficial for social anxiety disorder.
With an experimental and controlled group.
I just need to know what test I ...
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MANOVA post-hoc tests: when do I apply the p-value correction?
I'm sure this question has been answered somewhere here but I can't seem to find it.
Say I have two dependent variables, scale A and B, and I want to run a test to determine whether the multivariate ...
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Mixed Measure Anova vs. Two Way Anova & Repeated Measure Anova?
hello!
I am attempting to determine if I should run a Mixed Measure Anova or a Two Way Anova & Repeated Measure Anova.
Essentially, I have a design where there are four treatment levels (t1, t2, ...
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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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Post hoc for Repeated measures MANOVA in R?
I'm analyzing a dataset composed of 3 dependent variables (pressure of neck, torso, and lumbar zones) measured in 5 moments (t0, t1, t2, t3, t4).
Since interaction between the variables may exist, I'm ...
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Repeated measures factorial ANOVA - independent variables from an equation
I have responses from 30 patients for 4 independent variables. ind_var1 has 2 levels, ind_var2 has 3 levels, ind_var3 has 2 levels and ind_var4 has 4 levels. No groups in the dependent variable. So ...
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Should this be an ANOVA or a MANOVA?
I'm fairly new to statistics and am struggling to figure out whether I should be using ANOVA or MANOVA for my research design:
Participants will watch a performance together in one of three different ...
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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 compare variances of multiple independent variables (to themselves) pre vs post treatment to determine treatment efficacy?
I have 10 different subjects and observations of their blood pressure before and after treatment.
Treatment occurred at different times and at different ages in the subjects lives.
I'm interested in ...
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Non-parametric MANOVA, (multivariate) Kruskal-wallis, or data transformation?
I have one IV (faculty) and multiple continuous DVs and wanted to do a one-way MANOVA. As MANOVA requires normal-distributed data, I plotted the DVs and saw that they are heavily long-tailed (keep in ...
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Normal and non-normal distribution of data?
I am quite an amateur in statistics. I have data where I would like to test if I can perform parametric or non-parametric testing depending on if the data is normally distributed or not.
The data has ...
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Use of multivariate Shapiro Test for large sample size
I want to check for multivariate normality to conduct a MANOVA with two dependent variables.
Can I use Shapiro-Wilk test for multivariate normality if I have a rather large sample size (N = 1200)?
Or ...
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Do there exist welch's repeated measures anova/ancova/manova?
Do there exist welch's repeated measures anova,ancova for unequal variances or does one have to run a mixed-effects regression or friedman test?
Is it possible to generalize this methodology to ...
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Two-way mixed repeated measures MANOVA in Python or R
I compare three groups:
A control group
Two different clinical populations
They are subjected to 6 different types of stimuli, several times each (repeated measures), and 5 dependent variables are ...
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Pillai for independent variable high but never significant in regression
I've run a multivariate multiple regression, I have 6 dependent and 15 independent variables. All in all, I would say that in all 6 regressions about half of the coefficients were significant and ...
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Time series regression with two dependent variables
I would like to find a suitable model for the relationship between multiple independent variables and two dependent variables simultaneously. Which model would you recommend me to use? If I understand ...
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How to interpret my results of a multivariate analysis of variance with repeated measures
I did a study for my thesis and now I am a little bit worried, that I am interpreting my results wrong. If anybody could help me with that, I would be quite happy and thankful!
Relevant information ...
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Need help figuring out what statistical test to use (ANOVA or MANOVA)
I am trying to figure out what statistical test I need for my eye tracking study.
I have 2 dependent variables: Dependent Variable 1 is continous (gaze behaviour, which is subdivided into fixation ...
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MANOVA in R, but observations in each dependent variable are measured more than once
Suppose I have 2 teachers with 9 students nested under each. For each student, I have their test scores for 3 STEM subjects (math, physics, and chemistry) over two semesters, and in each semester ...
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Model selection for $4\times 2\times 2$ factorial design in R
I have read so many books, forums, and sites that I have completely confused myself.
Originally, my design was a simple 4x2 factorial with two categorical predictors, but it has gotten more complex ...
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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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Effect size calculation on a MANOVA with contrasts
I would like to conduct a repeated samples (patient) ANOVA (with Factor X with 3 levels A, B, C) with the planned contrasts (A+B)-C (i.e 1 1 -2) and (A+C)-B (i.e 1 -2 1) as well as calculate the ...
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What test to use to control for socio-economic status (MANOVA?)
Newbie question. I'm studying the stress levels of a minority population and I intend to compare it with the stress levels of a majority population. However, I'd like to explore whether discrimination ...
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Which statistical analysis should I use for my research proposal?
So I'm designing a study but not sure which statistical test to use.
Participants will be split into three groups - A, B, and C.
For all participants, I will first conduct a questionnaire and will use ...
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repeated measures design vs. MANOVA power analysis
My collaborator and I are building a study where participants will read some profiles that vary for 3 dimensions each having 3 levels (9 profiles in total). For each profile participants will have to ...
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Mixed model in R: Are ezANOVA (from the ez package) and anova_test (from the rstatix package) fundamentally wrong?
I've recently completed a study on an animal (rat) model of a psychiatric disorder. In summary, the study consists of the following steps:
Induction of psychiatric disorder
A Behavioral test (test 1) ...
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The minimum number of sample size for two-way MANOVA and unequal sample sizes
I have 2 categorical IVs(2 levels in each variable) and 3 continuous DVs.
One IV is teaching approach and the other one is education (a moderator).
I'm going to examine the effect of the 2 IVs on DVs ...
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Three-way manova or separate anovas?
I have three independent catagorial variables and two dependent continuous scale variables, so I want to compare means across these three independent catagorial variables.
I think here the best choice ...
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Linear mixed model (repeated measurements) on HUGE dataset
I have a huge dataset with measurements of 21k genes across 11k samples. The measurements, called expression, represent (roughly) how "active" that gene is in the cells of the sample (in ...
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Non-normal data, manova and kruskal_test
I am trying to perform a statistical test on a large data frame. For this, I was thinking to find differences between groups using MANOVA.
I have 70 columns and 2 independent variables.
In the example ...
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Moments of the Hotelling Lawley Trace under the alternative
The Hotelling Lawley trace is used in multivariate ANOVA, or for tests of the Multivariate General Linear Hypothesis (regression coefficient testing in many-to-many linear regression). For our ...
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