post hoc test

  1. P

    Anova test post-hoc error

    Dear All, Please help me with my statistics... I am using 5 different dimensions to interpret the correlation among them. For instance, Burnout is negatively related to engagement. All dimensions have at least 3 Lickert scale data. Now, I would interpret the analysis among them, trying with...
  2. J

    What post-hoc test to use with 2x2 repeat measures ANOVA

    I believe this question should be relatively simple. I have a 2x2 repeat measures anova for a performance task. My two factors are presence and absence of an observer and presence and absence of music playing in the background, therefore my 4 conditions are (1)no observer-no music...
  3. C

    Post Hoc test for Fisher's exact test

    Hello everyone! I have performed a Fisher's exact test (5X3 tables) and I have found statistically significant differences in my groups. How can I find out in which groups significant differences were found? Is there any post hoc test I can perform? Thank you deeply in advance!
  4. G

    Stepweise step down post hoc test for Kruskal-wallis in SPSS

    Hello, What are the criteria for computing the pairwise or the stepwise step-down comparison in SPSS after Kruskal-Wallis? I know that the pairwise comparison is more conservative than the stepwise comparison, but are there any other criteria to decide which post-hoc test to use? Does anybody...
  5. J

    Contingency Table Analysis by chi square problem

    I am trying to figure out a chi square problem, and I keep getting stuck. The problem reads: A researcher tested single mosquitoes from five different locations for the presence of a particular virus and obtained the following data: Location A B C D E w/ virus 3 7...
  6. P

    post hoc test for 3 way anova

    Hi, I am doing ANOVA using three fixed independent factors of which one is sex (two levels 'male' and 'female'), temperature (three levels: 1,2,3) and quality (two levels: good and bad) and I want to see the effect of these factors on dependent variable factors like life-span, weight and...
  7. K

    Interpreting pairwise comparisons for significance when you have 3 groups

    Dear posters, I am currently trying to interpret results from three different groups in my study. There is essentially a control group and two picture groups. My original hypothesis would be that one of the picture groups would outperform the other, but post hoc testing revealed something...
  8. R

    Post hoc test for Trend analysis and other

    Hi all, I'm new to trend analysis and would like to get some advice. My study is about treatment intervention on learning. Between-subject variable is treatment group (treatment1, treatment2, no treatment) and within-subject variable is time (time1, time2, time3). My dependent variable is...
  9. C

    Post Hoc Difficulty: Cannot Conduct Tamhane's T2

    Hi, So I have just conducted my Two-Way ANOVA using my undergrad thesis data, and my Levene's Test came back with a significant result. According to my lecturer's notes, I'm to conduct a Tamhane's T2 as a Post Hoc, however I am not allowed to select this function in the Post Hoc tab (or any of...
  10. P

    Is One Way ANOVA the proper test that I should use?

    Hi! I have precipitation data ~20 years. For each year, I have the total precipitation for a given month for that specific year. I am trying to find if there there is a statistically significant difference between the years in the total precipitation. I have organized my data such that each...
  11. P

    In SPSS two factor ANOVA, how to compare control groups across other factor?

    I have two factors: Brainregion (4 levels) and Group (5 levels). Glutamate is my dependent variable. (data attached in data file) Brainregion Group Glutamate CC Control 11.37339396 CB Control 11.18106494 HC Control 11.45533601 PM Control 10.62418165 CC Alcohol 10.4039496 CB Alcohol 9.882992035...
  12. G

    What is formula for calculating Simple Contrasts test for within-groups ANOVA?

    I need to be able to calculate long hand some Planned Comparison test for a Within-Groups ANOVA framework. I understand the most common tests in such a situation are "Contrasts" test including: Simple Contrasts, Repeated Contrasts, Deviation Contrasts, among other Contrasts test I assume that...
  13. N

    Post hoc comparisons. How to do the grouping?

    Hi all, Can anyone help me trying to understand how to do the grouping at the end of the post-hoc procedure in the one way ANOVA? For each kind of test (LSD, Bonferroni, Tukey, Scheffé etc) I can understand the way it calculates the confidence interval and how it check if the means of each...
  14. P

    Which analysis more suitable?

    Dear all, My data consists of 8000 rows and 14 columns, as follows: The rows correspond to quadruplicate measurements of 2000 variables and columns represent different non time-related conditions. I want to identify variables with statistically significant size difference in any pairwise...
  15. E

    Is it ok to run some planned comparisons and some post hoc?

    Hello - I am a phd student in psychology and I would be very grateful for some advice about contrasts. I have conducted a naming experiment for which response time was the outcome measure. There were 2 groups (treatment v control) and 3 testing conditions (A, B and C). I ran a mixed 2 x 3...
  16. I

    Post hoc analyses for a 3-way interaction in an ANCOVA

    Hi, I am doing a repeated measures with a covariant. a 3-way interaction (gender-group-memory) emerged as significant. I understand that when doing a repeated measure with a covariant the "post hoc" option for SPSS is not applicable. I selected "compare means" in the option window, but I...
  17. M

    HELP - very strange error in my values

    I was attempting a post hoc test after running a manova in spss and it would not run because "one group has fewer than two cases". Before I go further, let me make it clear that this is incorrect. In the Between-Subjects Factors table, my values are listed as follows: Identity: 1...
  18. G

    [SPSS - GLM-ANOVA] GLM-ANOVA an appropriate choice of statistics?

    Dear Community! I have two questions regarding the GLM-ANOVA and post hoc tests! 1 ) Is the GLM-ANOVA an appropriate choice of statistical analysis in my study? 2 ) Post hoc test: Fischer´s LSD vs. Bonferroni Study design: I have 4 groups of patients with different diagnosis in which...
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    repeated measures anova, post hoc testing

    Hi there, I have a 2x4 fully repeated measures design in which participants had to correctly state whether a target was absent or present in a visual field task, with different numbers of distractors. the first independent variable is target presence/absence the second independent variable...
  20. I

    How to do post hoc tests in logistic regression?

    I looked at whether participants recycled after being subjected to a given message. There were three groups: a Control group, group A, and group B. Since my dependent measure was dichotomous (recycling vs. using the waste bin), I performed a logistic regression in SPSS. However, SPSS only let...