All Questions
Tagged with manova hypothesis-testing
29 questions
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Multiple hypothesis testing adjustment when only the number of significant tests is important
We are measuring the effect of a treatment T on a latent outcome variable (specifically, "Discrimination"). We have a number of outcome variables that we think do a reasonable job as proxies ...
3
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3
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195
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How to perform a joint significance test for multiple coefficients across several regression models?
I have 10 regression models, each regressing a different dependent variable $ y_i $ (for $ i = 1, 2, \ldots, 10 $) on the same independent variable $ x $. Each model produces a coefficient for $ x $, ...
- 96
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38
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Why Do Different MANOVA Test Statistics Produce the Same Approximate F and P Values in R?
I am using the manova() function in R to perform multivariate analysis of variance on my dataset. I have tried using different test statistics such as Pillai's ...
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1
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85
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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 ...
- 19
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1
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203
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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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46
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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 ...
1
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0
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76
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MANOVA Repeated Measures
I hope somebody can help me with my confusion.
My dependent variables are: emotions, interest, and attitude change, while independent variable is type of message: a) self-appraisal message b) family-...
- 11
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1
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3k
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Which statistical test is correct to compare two groups of very different sizes?
I have two groups that consist of the tree fraction and elevation. The sizes of the groups are very different, and the mean of tree fraction and elevation are included in the table, below. They are ...
- 538
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6k
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Multivariate ANOVA in python
I'm running a multivariate 2-way analysis and would like to know how to proceed. Basically, I have two effects group and time ...
- 411
1
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1
answer
50
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Choice of test in a pre-post scenario
I would like to test whether there is a significant difference in outcome in a pre/post scenario.
I have the following set-up:
Measured level of concentration of A (...
- 210
1
vote
0
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44
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ANOVAs with dichotomous and multicategorical IVs: how to compare subcategories? [closed]
I have continuous DVs and my IVs are two categorical variables, one is dichotomous (low/high) and one is multicategorical (1/2/3/4). I'm interested in comparing each group and their interactions. For ...
- 11
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29
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What statistical test should I use for my data set?
I have a data set on 20 patients. These patients were administered a cognitive test over the duration of their stay in an inpatient clinic. The cognitive test measured 5 different outcomes (like ...
- 11
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0
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29
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Which statistical test should be used?
I am stuck in deciding which statistical test would be more appropriate in my case. My research questions are whether or not in the gait analysis there are differences in pressure between ten foot ...
1
vote
1
answer
3k
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How to compare gender proportions in a population? [closed]
I want to test if more women are graduating from high school than men, the last ten years. I want to use percentages, not raw data. (2007-2017 percentages of women who graduated from high schools ...
- 21
1
vote
0
answers
25
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Variance and regression of binary repeated measures
For my research I have asked the same binary question (yes/no) to the same sample five times under different conditions. So every subject goes through every treatment. I have used a McNemar Chi-Square ...
- 51
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1
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1k
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Multivariate differences between groups controlling for one factor (MANOVA)
I have a sample of 100 participants who have scores on 5 different variables (V1-V5). Some participants took part in a workshop, others did not.
I am interested in investigating the influence of ...
- 51
3
votes
1
answer
700
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Pros and cons of 5 ANOVAs for 5 DVs instead of 1 MANOVA
This** study asked subjects to rate musical excerpts along 5 subjective dimensions (valence, tension, energy, consonance, preference); each excerpt had a certain chord type and a certain register.
...
- 2,352
0
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1
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756
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MANOVA interaction effect wont compute
I am performing a MANOVA with a large multivariate dataset representing total body shape (dependent variable). My two independent variables are gender (sex) and cluster (from a previously computed ...
- 11
1
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0
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20
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Hypothesis testing for matrices of RVs
I looking for the correct statistical test for comparing matrices of random variables - my IV being a categorical variable and my DVs being n by n matrices of random variables (which are themselves ...
- 11
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1
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1k
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Difference between multi-factor ANOVA and Cox proportional hazard model?
I am wondering what is the difference between multi-factor ANOVA and Cox proportional hazard model? As I understood both of them test the significance of some independent factors on a dependent factor....
- 15
11
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2
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20k
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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 (...
- 5,182
8
votes
1
answer
7k
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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.
...
- 83
3
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1
answer
538
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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 ...
- 319
2
votes
1
answer
83
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Number of dependent variables greater than # IV's in multivariate hypothesis test
I have a multivariate regression model $\mathbf{Y}$ = $\mathbf{XB}$ + $\mathbf{E}$ where $\mathbf{Y}$ is $n \times m$.
In my case $\mathbf{n < m}$, the number of columns in $\mathbf{Y}$ is ...
- 2,861
7
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2
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17k
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Choosing between a MANOVA and a series of t-tests when comparing two groups
I have to analyze the data from a study in which two groups of subjects (total sample $n = 30$) were tested on 4 cognitive tasks, all related to executive functions. For each task, I have accuracy ...
- 1,062
2
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0
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435
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What is the nonparametric variant of multivariate ANOVA with more than one one factor (and with interactions between factors)? [duplicate]
I analyze real data where assuptions of classical multiway (more than one factor assumed) MANOVA (more than one response variable) are not met (normality, equal variances). Is there any nonparametric ...
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75
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3
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63k
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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 ...
- 2,011
6
votes
2
answers
1k
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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 ...
- 1,005
1
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0
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267
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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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