Stack Overflow
Stack Overflow

Questions tagged [manova]

The Multivariate analysis of variance (MANOVA) is a statistical test procedure for comparing multivariate (population) means of several groups.

Multivariate analysis of variance (MANOVA) is a statistical test procedure for comparing multivariate (population) means of several groups. Unlike ANOVA, it uses the variance-covariance between variables in testing the statistical significance of the mean differences.

Details: http://en.wikipedia.org/wiki/Multivariate_analysis_of_variance

91 questions
5
votes
2 answers

How to create a boxplot for multiple dependent variables from the WeightLoss dataset?

I'm trying to make a boxplot from the WeightLoss dataset from the car package. The variables of interest are separated by month, so I made boxplots by month separately, with all the groups (Control, Diet, Diet and Exercise) showing. I only want to…
struggling student
  • 53
  • 5
4
votes
0 answers

Is there a Python implementation of Welch-Satterthwaite MANOVA?

I have looked around in the Python Package Index, Github, and Sourceforge, but I have yet to find a Python implementation of MANOVA with degrees of freedom calculated with the Welch-Satterthwaite Equation. Has someone found an implementation for…
Galen
  • 1,128
  • 1
  • 14
  • 31
4
votes
2 answers

Extracting Multivariate Tests from the output of Anova or Manova function from car package

I wonder how to extract the Multivariate Tests: Site portion from the output of fm1 in the following MWE. library(car) fm1 <- summary(Anova(lm(cbind(Al, Fe, Mg, Ca, Na) ~ Site, data=Pottery))) fm1 Type II MANOVA Tests: Sum of squares and products…
MYaseen208
  • 22,666
  • 37
  • 165
  • 309
3
votes
0 answers

Multivariate Kruskall Wallis Package in Python

I would like to investigate whether there are siginifcant differences between three different groups. There are about 20 numerical attributes for these groups. For each attribute there are about a thousand observations. My first thought was to…
Pytno
  • 57
  • 5
3
votes
2 answers

MANOVA using stats models

I'm looking for an example of a statsmodels MANOVA implementation. I can't make heads or tails of the Statsmodels website for MANOVA. I've gotten as far as: endog, exog = np.asarray(pre_post[feats_list]), np.asarray(pre_post[features]) man =…
Alicia
  • 121
  • 1
  • 12
3
votes
0 answers

R function for post hoc pairwise comparisons of MANOVA

Anyone know about an R function for post hoc pairwise comparisons after a MANOVA test, that is, check for groups differences for several variables (I only know functions to do ANOVA post hoc comparisons such as pairwise.t.test() or TukeyHSD(), but…
A.N.Y.one
  • 31
  • 4
2
votes
1 answer

Python statsmodel two-way anova's gives sum of squares that are different from manual computation from scratch

I have a data set containing a continuous and two categorical variables, by using which I run two-way ANOVA by computing sums of squares and mean squares from scratch. Then I checked my codes' reliability by comparing the results to Python…
Hye Jin Lee
  • 31
  • 3
2
votes
1 answer

MANOVA effect size (partial eta squared) in R

For ANOVA, one can easily get the partial eta squared (np2) effect size with effectsize::eta_squared: > model <- aov(mpg ~ factor(cyl), data = mtcars) > effectsize::eta_squared(model) For one-way between subjects designs, partial eta squared is…
rempsyc
  • 785
  • 5
  • 24
2
votes
1 answer

How to extract p value from Manova output

I am testing the Hotelling T^2 test via the manova formula in R. I am testing different same sizes and so have multiple Manova table output. Below is how I generated the manova for the entire…
daisybeats
  • 217
  • 1
  • 6
2
votes
0 answers

How to conduct a MANCOVA

I am trying to perform a mancova in R. However, I have tried the jmv package: x<-cbind('total.c','total.p') #dependent y<-cbind('Treatment','Sex', 'Species', 'Location') #independent mancova(intake, deps=x,factors=y,…
Douglas
  • 223
  • 1
  • 9
2
votes
1 answer

Growth curve analysis in R - comparison of two growth curves

I have a small task to do, unfortunately I'm not familiar with this field of statistics... Actually I did needed calculations (I'm not looking for ready solution), however I don't know if they're correct and also and my way of thinking, hence I'll…
Adamm
  • 2,150
  • 22
  • 30
2
votes
1 answer

How to get pvalue from statsmodels MANOVA?

How to get MANOVA p-value from this:https://www.statsmodels.org/stable/generated/statsmodels.multivariate.manova.MANOVA.html#statsmodels.multivariate.manova.MANOVA ?
Gillian Grayson
  • 316
  • 1
  • 9
2
votes
0 answers

Specify within-subjects and between-subjects ANOVA model using lme or lmer, as fixed-effects

Is there a way to specify a two-way ANOVA, with one within-subjects predictor and one between-subjects predictor using lme (from nlme) or lmer (from lme4)? Perhaps this is a CrossValidated question, but I don't think I am interested in…
Kayle Sawyer
  • 549
  • 7
  • 22
2
votes
2 answers

Error in summary.manova - residuals have rank order deficiency

I am trying to carry out a MANOVA. There are 7 dependent variables and a categorical independent variable representing 6 groups. The data are available here: http://pastebin.com/fqXNjWtr Click download above the text. I am reading the file with R…
Joshua Rosenberg
  • 4,014
  • 9
  • 34
  • 73
2
votes
0 answers

How to set up a one-way repeated measures MANOVA in R with no between-subject factors

Main Question I'm looking for help setting up a one-way repeated measures MANOVA in R for a data-set that has no between-subject factors. Background While there are plenty of good guides out there for setting up RM MANOVAs with between-subject…
TheRobotPants
  • 21
  • 1
  • 2
1
2 3 4 5 6