Comments (5)
I STRONGLY SUSPECT S/N, spread, and mean will be correlated with each other, which raises the question which one(s) to use as predictors for percentile.
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Statistical approaches
- lm
- pro: super straightforward, r2 computes automatically
- con: not actually appropriate for response variable bounded 0-1 (or 0-100); estimates go outside range of possible values AND fails to accommodate expected bunching up at the extremes
- binomial glm
- pro: easy and automatically bendy
- con: r2?
- beta regression
- pro: from googling, developed specifically for modeling probability as a response. Use coefficients and pseudo-R2? See https://cran.r-project.org/web/packages/betareg/vignettes/betareg.pdf
- con:
looks bayesian (not freq),not sure how to implement or interpret (but learnable)
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Beta regression can't handle 0 or 1, and I'm getting failures even when I fudged it (changed 0's to v small, etc)
Try zero-one inflated beta regression in brms? https://cran.r-project.org/web/packages/brms/vignettes/brms_families.html
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These all covary so strongly with S and N I no longer have much confidence in teasing apart relationships.
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I think it's worth doing a zero one inflated brms just to see if %ile value changes with S and N, or maybe N/S. We know there are complicated relationships between S and N and FS characteristics, but it is hard to tell if there's really any cascading effecton %iles.
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Related Issues (20)
- Reproducible example with subset HOT 1
- Edits checklist HOT 1
- uestions for HY/SKME HOT 15
- Data citation and archiving HOT 1
- Prior to submitting
- February revisions
- Resampling
- Shannon diversity
- Proportion off
- Number of rare species HOT 3
- Run status
- Use nparts, not skew_unique
- Next time you run all_di
- breadth indices
- 2t
- End cases for percentile HOT 1
- Prior to submitting revision 1
- staircase wit
- Add sads to diss
- Draft SADs slides for SNRE
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