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Results tagged with mixed-model
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user 346283
Mixed (aka multilevel or hierarchical) models are linear models that include both fixed effects and random effects. They are used to model longitudinal or nested data.
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Appropriate distribution for continuous, positive and bimodal response variable in glmm
I am seeking assistance on choosing appropriate distribution for glmms. My response variable is continuous, positive & bimodal with minimum value 0.35 and maximum value 100. Is Gamma (link = "log") ri …
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Should I transform my count response variable to continuous response variable for mixed mode...
I conducted an experiment where I counted the number of infected leaves per plant. There were four replicate plants per treatment (total two treatments). So my response variable is positive count data …
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Seeking feedback on the interpretation and reporting of a glmm output
This might be a very beginner level question. I have fitted a model with glmmTMB R package, considering the interactive effect of mean wind speed and average daily rain as well as an interactive effec …
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Is it possible to calculate x-intercept from a mixed model?
I understand that the x-intercept can be calculated using $y = mx + b$ for a linear model. I am unsure if this is statistically appropriate for a mixed model with count data, given that counts cannot …
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How to analyze a dataset with unequal treatment distribution?
I’m looking for the best way to analyze a data set. The experiment was conducted at two different locations, X and Y. The experiment at location X was conducted in one year (2014), whereas the one con …
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How to account for different trial durations in mixed models?
My experiment was conducted in multiple years. Each year, plants were sown in an infested field and then harvested after a certain time. There was a weather station to record weather data. I would lik …
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Appropriate family to use for continuous response variable (proportion data) with both negat...
I have a continuous response variable from proportion data with both negative and positive values. Values in response variable range from 0.92 to -0.92. I would like to use glmms but not sure what fam …
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Is it possible to add a regression/fitted line equation to a mixed-effect model plot?
I have been asked to add a regression/fitted line equation to a negative binomial mixed effect model plot. Example of a regression line equation is highlighted in yellow below for linear model.
I sea …
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