anova

  1. L

    two way ANOVA?

    Dear all, I'm currently working on my thesis, which is an analysis of the effects of social cycling on cyclists' stress levels. An experiment with a total of 21 participants was conducted. The Experiment was about a comparison between single cycling vs group cycling. Single rides and group...
  2. B

    ANOVA with missing case

    Hi All, I was wondering if anyone could shed some light on a current situation I have encountered. I have a study set-up with 13 participants that I am examining over 5 time-points, hence, I intend to conduct a one-way ANOVA. However, on one of the time-points, a participant was unable to...
  3. M

    Measuring categorical (race) and two continuous varibles

    I need your help to identify which test I have to implement for measuring the correlation of one categorical and two continuous variables. In my study I have two constructs: 1- information consumption from credible sources (CS)--4 items(ie., information consumption from CDC website) 2-...
  4. S

    Testing two independent variables (categorical and interval) and interactive effects on continuous data?

    Hi, I'm not sure if there is an actual statistical test for this, but I want to see how Side (Left or Right, categorical) and Depth (Interval, fixed at every 250, but I don't have data for all depths) affect a continuous parameter I have. I initially tried a multiple linear regression, I am...
  5. C

    Comparing quantiles from one sample

    Hello! I'm looking to determine factors that play a role in a country's life span. I want to split the countries up using the percentiles from life expectancy (i.e. 0-25%, 25-50%, 50-75%, and 75-100%). My rationale behind this is to understand how countries with lower life expectancies compare...
  6. N

    ANOVA on three columns?

    Hi all! I am new to this forum so hopefully this will be a success! I have some data in excel from 3 experiments that are run independent from each other (they do not influence one another). Each experiment has 10 runs each. All the data across the three sets of experiments (i.e. 30 runs) have...
  7. S

    Normality test in data with multiple treatments

    Greetings. I have to test for normality to know if I go the ANOVA route or the Kruskal-Wallis route and I don't know how to go about it. I have an experiment with the setup shown in the attached image. I have several treatments, within each treatment I may or may not have independent reactors...
  8. StrangeCharm

    Which approach to evaluate small spatial variations in temperature?

    I am evaluating whether utility-scale solar energy plants affect the surrounding climate (initially temperature). An effect has been found in one paper using the approach described below/attached but when repeating this approach I find no effect for the same site. I want to be sure that there...
  9. A

    Unequal sample size of 2 groups data. Will it affect the ANOVA result?

    Hi All, I have a doubt. I have a dataset attached in the below image. I am doing ANOVA on the dataset to findout Dosage have a significant effect on Injected_timing. But I have unequal data(For person1 , there is 2 morning and 1 evening data. For person2, there is 2 morning and 1 evening...
  10. victorxstc

    SPSS - Using mixed univariate ANOVA (UNIANOVA) or mixed linear regression (MIXED) instead of repeated-measures ANOVA

    Which process is better for using instead of Repeated-Measures ANOVA (SPSS syntax: GLM -- GUI command: Analyze --> General Linear Model --> Repeated Measures)? and Why? (1) Mixed univariate ANOVA (SPSS syntax: "`UNIANOVA`" -- GUI command: Analyze --> General Linear Model --> Univariate) (2)...
  11. S

    Standard deviation from ANOVA-table

    I am trying to find an estimate for σ , based on the ANOVA-table under, but I dont know where to start. Is it possible to find the estimate for σ from the residual standard error? if so, how?
  12. R

    Help deciding which spss functions to use

    I'll start off saying that stats in general has never been a strong point for me :D The variables i am using are; Gender Age Relationship Status Number of dependants Profession Neuroticism (Higher score = higher neuroticism) Affectivity (Higher score = positive; lower...
  13. H

    Do I need a two-way MANOVA test?

    I am testing for differences between 3 groups. I have 2 dependent variables which are continuous data. However, I am confused about my independent variables and if a two-way MANOVA test would be suitable. My three groups are Rural, Semi-rural and Urban (3 groups). For each group I am testing...
  14. S

    Which test for hierarchical within-between design?

    Hi everyone, I'm about to design an experiment with one independent variable of three levels. However, two of the levels can be 'grouped together', and I'm quite unsure about if my experiment design makes sense, and even more important, which statistical test I can use for evaluation. For...
  15. D

    Should I use repeated measures ANOVA or one-way ANOVA?

    I am conducting a study on different image reconstruction algorithms for computed tomography (CT). My aim is to investigate which of the image reconstruction algorithms that have the highest signal-to-noise ratio (SNR). My dataset is 100 patients who underwent a CT brain scan. Each CT scan will...
  16. L

    SPSS - ANOVA test and & Post Hoc

    Hi, I have conducted both ANOVA along with Post Hoc Test on SPSS. However, I have encountered a problem on the Post Hoc Tests. In particular, between the multiple comparisons and homogeneous subsets sections. My problem is under the multiple comparisons - the category 7 is not statically...
  17. J

    ANOVA - separate for subjects and items, and how to aggregate

    Hello everyone, I have a basic statistics exam coming up and while studying found the instructor's notes to be a little short in one area. In the field of linguistics, separate ANOVAs for subjects and items are fairly common to get results that are generalisable for people as well as stimuli...
  18. L

    Two-way-ANOVA in vassarstats.net

    Hello, I am using vassarstats.net for a two-way-ANOVA with repeated measures on both factors. The results for row and column variables seems to be alright, but the interaction effect between row and column variables shows a F value of 0 and a p-value of 1. I don't understand how I should...
  19. L

    How to study the effects of alcohol consumption on happiness & cognitive function?

    Hello, I want to study if there's a relationship between alcohol consumption and happiness + cognitive function. Most of my data is nominal or ordinal. To measure alcohol consumption: How often respondent has had an alcoholic drink during the last 12 months To measure happiness: Overall...
  20. A

    Multiple Imputation in SPSS: What to do and report

    Hi everyone :) I'm currently working on a research question where there are 2 categorical predictor variables (one with 2 levels between subjects, the other with 7 levels within subjects) and one continuous response variable. I want to conduct a simple repeated measures ANOVA in SPSS. The...