Questions tagged [two-way]
For statistical models or methods used to study the effects ow two variables simultaneously, see https://en.wikipedia.org/wiki/Two-way_analysis_of_variance
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Two Way Anova with Heteroscedasticity
I'm trying to run a two way anova test but the homoscedasticity condition is not met. My analysis is not balanced and I have over 3000 observations in my sample. Is it okay to proceed even if the ...
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How to interpret results of a GLM from a double factor experimental design
I have an experiment with two factors "Enzyme", and "FeedMixture" which has 4 different levels. "FeedMixture", is a variable of type factor. Below I simulate a response ...
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Help needed in recreating ANOVA test results from study
I am aiming to recreate ANOVA tests as part of Study 1 from the following research paper related to some psychological factors:
https://doi.org/10.3389/fpsyg.2021.738447
There are altogether 80 ...
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Should I use one-way or two-way anova?
There are eight groups of treatment with different concentrations and different. Initially, we thought about using two-way ANOVA with the factors being 1. the type of experimental setup and 2. the ...
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Two-way ANOVA help
I am measuring the differences in fungal abundance in different stages of grazing and depth so I have tow factors (grazing intensity and soil depth) My main effects are all significant but so is the ...
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Contrasting results between ANOVA (car) and emmeans
I conducted an experiment involving two forest plots: one that experienced a fire and another that remained unburned. Each plot was further divided into two regions: the edge and the interior. My ...
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Appropriate design for two experimental conditions and incomplete blocking
I'm planning to perform an experiment in which I will be assessing the role of two experimental variables (A: 6 levels, B: 4 levels) on a defined outcome which, however, might be affected by external ...
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Anova model assumptions. How to go by?
I have a data frame that contains a continuous response variable measured on different species, at different elevation and month of sampling as explanatory variables. I want to analyze how the ...
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Robust ANOVA t2way unequal sample sizes?
I have some parameters that I would like to analyze with a two-way ANOVA. The treatment groups have unequal sample sizes (n=9, n=36, n=36, n=36) and the data do not fulfill the requirement of normal ...
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Confusion about Two Way ANOVA test vs Chi-square test for independence. Which one to use here?
A certain drug is claimed to be effective in curing cold. In an experiment on 500 persons suffering from cold, half of them were given the drug and the other half were given the sugar pills. Patients' ...
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How to analyze multivariate data that comes from a 2D design space?
I'm analyzing a set of biological samples. Each sample is linked to a specific carbon and nitrogen concentration, representing the 2D (experimental) design space I referenced in the title. I've ...
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What's the relationship between this two-way hierarchical table and the stacked barchart?
I have the first impression the hierarchical two way table, it throws out the gasoline, it creates a new category called "other food at home"
How to reconcile the numbers under Food at Home ...
user384464
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What is the best post-hoc test to use after a two-way anova has shown there is only a significant effect when including 0 as a factor level?
I have two factors: A and B, and a response, y.
For factor A I have 3 levels: 300,400,500.
For factor B I have 3 levels: 0.5, 0.6, 0.7.
I carried out an experiment with each combination of these two ...
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Confusion for 2-way Anova in 2x2 experimental design with planned comparisons
I am really confused regarding 2-way Anovas. I think I did not understand something properly.
Let's say I have a 2x2 experiment design with 2 factorial variables (For the sake of an example let's say ...
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Kruskal-Wallis as a non-parametric alternative to 2-way ANOVA?
I'm a master student currently working with taxonomy and cultivation of wild edible mushrooms. In my experiment, I'm evaluating the effect of 4 distinct solid culture media and 4 temperatures on the ...
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