Questions tagged [manova]

Multivariate ANalysis Of VAriance (MANOVA) is a generalization of ANOVA for the case with several dependent variables.

Filter by
Sorted by
Tagged with
0 votes
0 answers
9 views

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 ...
0 votes
0 answers
11 views

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 ...
  • 13
1 vote
1 answer
21 views

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 ...
0 votes
1 answer
26 views

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 ...
0 votes
0 answers
4 views

I need a simple but indepth explanation of what a perMANOVA is and how to use it

I've been told by the supervisors of my honors project that I'll be using a perMANOVA to analyze the differences in invertebrate abundance and diversity across 4 different sites, some of which have ...
1 vote
0 answers
8 views

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, ...
  • 11
0 votes
0 answers
15 views

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 ...
0 votes
0 answers
110 views

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 ...
  • 53
0 votes
1 answer
40 views

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 ...
0 votes
0 answers
13 views

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 ...
  • 1
0 votes
0 answers
34 views

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 ...
0 votes
1 answer
107 views

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 ...
  • 51
0 votes
0 answers
10 views

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 ...
  • 167
0 votes
0 answers
29 views

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 ...
0 votes
0 answers
29 views

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 ...
0 votes
0 answers
12 views

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 ...
0 votes
0 answers
14 views

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 ...
0 votes
1 answer
51 views

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 ...
  • 31
1 vote
0 answers
7 views

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: ...
1 vote
0 answers
16 views

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 ...
  • 11
0 votes
0 answers
21 views

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 ...
  • 13
0 votes
0 answers
12 views

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 ...
  • 1
0 votes
0 answers
25 views

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 ...
0 votes
0 answers
7 views

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 ...
0 votes
0 answers
96 views

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) ...
0 votes
0 answers
20 views

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 ...
  • 1
0 votes
0 answers
24 views

Several one way anovas vs factorial anova

Is running several separate one-way anovas instead of factorial anova or two way anova have a big influence on p-value? If i run separate anovas will I get completely wrong results? I have 7 ...
  • 57
0 votes
0 answers
24 views

Would i do a mixed model MANOVA, a one factor MANOVA followed by individual MANOVAs?

Ive been trying to learn about MANOVAs and cannot seem to find examples relatable to my data, or I am not understanding the language being used to teach the concepts. I have stable isotope data which ...
  • 1,169
0 votes
0 answers
55 views

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 ...
  • 57
0 votes
0 answers
20 views

How to do a MANOVA if my three dependent variables have only two degrees of freedom?

In my experiment-design I have 3 dependent variables. They are related to percentages of time during which the subjects exhibit a certain behavior. As they always must exhibit exactly one of these ...
0 votes
0 answers
109 views

One-way repeated measures MANOVA in Python

I was wondering if it is possible to do a one-way repeated measures multivariate analysis of variance in Python? Sadly, I can only find explanations for repeated measure ANOVAs online. I have 1 ...
0 votes
0 answers
15 views

Manova nuisance covariates

I am running a manova e.g.: manova_result <- manova(dependent_variables ~ independent_variable + nuisance_variables) This shows a strong relationship between ...
  • 201
0 votes
0 answers
10 views

SPSS and Research Design/Analysis HELP

For my Major Research Project, I am investigating: Online versus Virtual Learning Environments - to determine the effect of student engagement on levels of presence when comparing these two ...
0 votes
0 answers
16 views

MANOVA for different dimensions of the rubric

We have two groups of students divided into control and experimental group, with a specific teaching method being the intervention. There are about 35-40 students in each group. We are grading one of ...
0 votes
0 answers
16 views

Do I conduct multiple ANOVAs or a MANOVA for a dependent variable that is not technically continuous?

I am planning a research with 1 independent variable (3 levels; young adulthood, middle adulthood, older adulthood), and 1 dependent variable (Individualism-collectivism). But my problem lies within ...
3 votes
1 answer
62 views

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 ...
  • 1,010
0 votes
0 answers
17 views

What ANOVA or any other test should I use if I have two independent variables and one dependent variable?

I have four groups - one group that will look at condition A, one at B, one at C and one is the neutral condition. The groups are comprised of different genders and age groups (ranging from 18-70). ...
0 votes
0 answers
15 views

perform pillai test on multivariate regression by hand

The build-in anova uses pillar's trace to examine the null hypothesis. To perform a pillar test, we need a hypothesis sum of squares and cross products matrix $H$ ...
  • 113
0 votes
0 answers
72 views

Manova, Hotelling's T^2 and follow-up?

For my final thesis, a few questions arose during the pre-registration process and I would be very happy to receive answers. I will conduct an experiment with three groups (1, 2, 3) and 3 dependent ...
  • 1
0 votes
0 answers
8 views

Performing comparisons (t.test) between subjects at different timepoints

I am reflecting on the analysis I was asked to perform. It is about 400 patients subjected to several nutritional interventions. We are trying to see if there are differences at baseline, 6 months ...
0 votes
0 answers
72 views

Reason for insignificant multiple regression analysis & alternative statistical approaches?

I have a very broad question regarding my statistical analysis and hope some of you can enlighten me how to proceed further. Generally, I analyze the value creation in company acquisitions. I divide ...
0 votes
0 answers
52 views

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 ...
  • 123
0 votes
0 answers
100 views

Test of Significance in Discriminant Analysis for R

I am currently learning about discriminant analysis in R. As far as I know, the MASS package allows us to perform Linear Discriminant Analysis using the ...
2 votes
0 answers
95 views

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 ...
  • 10.5k
0 votes
0 answers
93 views

is applying MANOVA okay with time-series profile groups?

I'm working with these type of time-series data (profiles), each profiles shows electricity usage for 48 hours for different 'buildings'. We can see some similarities between some profiles, but ...
user avatar
0 votes
0 answers
15 views

1 IV (3 categorical levels), 2 DV's (both scale data) - which test?

Terribly bad at stats - My grp sizes are horribly unequal and one is highly kurtotic - should I simply leave them this way or is there something I can do to 'normalise' while protecting effect size/...
1 vote
1 answer
62 views

MANOVA: Dependence in dependent variables

In my study, I have two age groups (YA and OA) and 3 scores (A, B, C) are collected from each participant. Here I'm interested in two dependent variables, "RCG" which is calculated by ...
  • 11
0 votes
0 answers
39 views

Finding variable contribution in manova

I have a dataset with one grouping factor and some dependent continuous variables. Given the difference, I want to know which variables contribute the most to the difference, like this variable A is ...
  • 1
0 votes
0 answers
44 views

Statistical significance of distance between difference of vectors (LDA)

I have an output from Latent Dirichlet Allocation (LDA) which sums up the corpus of about 2,000 documents into 50 topics. The 2,000 documents belong to a category each (in total there are 4 categories,...
0 votes
1 answer
115 views

How to perform ANOVA for data measured with unequal time interval?

So I have a set of patient data divided into 3 groups based upon their vision. I also have data on few variables that I believe to be relevent which are measured pre-surgery, 1 day post-surgery, and 7-...

1
2 3 4 5
9