manova

  1. N

    MANOVA design

    Being rusty, I would be grateful for a quick confirmation of MANOVA being an appropriate model: I have one dependent variable but 6 independent ones: group (3 levels), subjects per group (a variable number, between 11 and 110 subjects) and then the experimental variables: stimulus (3 levels)...
  2. T

    Multiple MANOVAs - How to adjust post-hoc ANOVA p-values

    Hi everyone I have (multiple) dependent variables which I split into two groups. For each group I do a separate MANOVA (one group for metabolism-related genes and one group for immunity-related genes). I assume that if I do post-hoc ANOVAs for each dependent variable (i.e. gene), I will...
  3. T

    Manova with within-subject and between-subject factors (no repeated measures!)

    hello, i need to do a manova with one within-subject factor (veracity) and two between-subject factors (type of speaker and type of presentation). However, it is NO repeated measures design! So how do I tell SPSS what to do? I have only found an option of entering within- and between-subject...
  4. G

    Manova not significant, some Anova tests are. Are they valid?

    I"m doing my dissertation on recommendations made during a diagnostic procedure, so I have 19 dependent variables based on 8 diagnosis levels. When I ran SPSS it was not significant, does that mean that none of the relationships are significant? or could some of the individual Anova tests that...
  5. A

    ANOVA or MANOVA

    Hi, I have a question on which statistical test to use for 2 separate problems: 1) I have 4 different groups, 1A, 1B, 2A and 2C and have 3 different response variables measured at several different times. However I am not interested in the behavior over time and want to treat them as...
  6. S

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

    Hello, 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 review/negative review x brand/no brand) between subjects design experiment.There were total...
  7. K

    Statistical test advice, currently thinking a MANOVA test.

    Hi, I'm sorry to bother everyone. I am collecting samples (continuous data) from 5 defined sites which can be split into 5 categories (A-E) (1 sample split into 5 equal sections), and will be doing this to gain a minimum of three repeats. The data can be split into 5 different size categories...
  8. S

    MANOVA, when independent variable is not multi-level and P value significance varies!

    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 independent variables are not continuous but they are measured on a 7 item likert scale. And my...
  9. J

    ITT and per protocol analyses. How to do both and how to compare baseline measures.

    Hello, I have read about but cannot find the answer to my queries. I am doing a study looking at the effects of positive thinking (PT) and exercise on depression. I'll be measuring at LEAST 2 outcomes. So far, depression levels and quality of life score levels using standardise inventories...
  10. H

    Calculating omega squared from spss manova output

    I'm trying to calculate omega squared from my output, googling led me to this formula w2=(SSeffect - (dfeffect) (MSerror) / MSerror + SStotal From my output i gather that SSeffect is the sum of squares for my dependent variable, the dfeffect is the degrees of freedom for my dependent...
  11. B

    Calculating sample size for a two way MANOVA using gpower?

    Hi! Just wondering if anyone can help me with this? My normal go to textbook - Quantitative Psychology by Clark-Carter - doesn't cover multivariate stats in great depth and for my project I am planning to do a two way MANOVA. The free Gpower 3 has been recommended to me, but there are no...
  12. K

    3 Dependent and 4 Independent Variables...MANOVA?

    Hello all, My study recorded 3 continuous dependent variables in relation to an ordinal experimental factor. However, there are 3 categorical bias factors that may have effected the results (some preliminary analysis leads me to believe that only 1 of these had any significant effect). I'm...
  13. W

    MANOVA / testing multivariatie normality

    Hi all, I'm doing an MANOVA with two dependent variables and one fixed factor (three levels). It is said that I need to test for multivariate normality. What is the right way to test for multivariate normality in SPSS? Do I need to test per level or all levels together? best regards Wilbert
  14. S

    Beginner Question- MANOVA error in R

    Hi, I have repeatedly tried to conduct a MANOVA in R but my output keeps returning "no error degrees of freedom". I have three plots each with multiple sample sites, with each sample site sampled 3 times (over 3years). I wish to compare the plots with each but also for differences in each plot...
  15. L

    MANOVA output- What does this mean?

    As I forgot to ask my supervisor yesterday. I have run a MANOVA on two DVs, and in the Multivariate Tests table it says that the main effects of Group and Time are not significant, but that the interaction effect is (Group x Time). I conducted a pre-post intervention study, so I do want...
  16. H

    Help deciding which statistical test to use in SPSS?

    Hi All, I am completing some research and wanted to double check that I am using the correct statistical test to analyse my data in SPSS. I was to look at whether Voting in the community (Categorical response Y/N answer) impacts on the participants feelings that their views are being heard...
  17. L

    Statistically Challenged Psychology student!!!

    Hi everyone, I am really hoping that someone here can help me out. I am really struggling with the analysis for a Psychology study I have conducted, and have lots of questions :( I find stats really difficult, and just cannot begin my analysis yet because I am so stuck. I will try to give some...
  18. E

    Use of extracted factors from EFA with Mancova in SPSS

    For a 2x2 between subjects factorial analysis, I need to test interaction effects of 2 IVs each having 2 levels. The questionnaire has multiple items and I would first like to run FA to reduce DV data and further use it with Mancova. What needs to be achieved: 1. how the extracted data can be...
  19. G

    Help with statistical analyses with only small sample size and multiple DV's??

    I am looking at the relationship between Schizophrenia, Substance Abuse and Neurocognition. I have 30 P's with Schizophrenia and 30 matched-controls (who are matched on age, gender, education level, IQ, and level of substance use), who have been administered a neurocognitive battery of 11...
  20. F

    SPSS error 12005 manova

    I have been having problems with SPSS. When I try to run a data set it says: >Error # 12005 in column 14. Text: -4 >A parenthesized value range in the MANOVA procedure contains a lower limit >(the first value) that is greater than the upper limit (the second value). >Execution of this command...