10
votes
Accepted
Visual assessment of scatterplots acceptable?
You ask:
to what extent is it “wrong” to merely do a visual assessment of
the data? I know that this is a simplistic way of dealing with the
data, but does this necessarily make my analysis invalid? ...
- 125k
7
votes
Visual assessment of scatterplots acceptable?
This is not a complete answer, but it should point you in a useful direction (I do not want to write "the right", because there may be more ways to skin this fish -in this case-; but it will ...
- 3,197
4
votes
Visual assessment of scatterplots acceptable?
Here is something more general. Usually a data analysis problem is driven by one or more specific research questions. Even if the aim is basically exploratory, meaning that you just want to get an ...
- 26.4k
3
votes
Deriving Fisher's mysterious estimator for the Unseen Species Problem
Fisher's formula is in the Good and Toulmin paper, though not very obviously. It's the estimator in equation 24 with $\lambda=2$, ie, the case where the second sample is the same size as the first ...
- 43.3k
2
votes
Test whether the variance in one group is higher than In another
It is misleading to test for a variance ratio equal to 1.0 with small samples. There is insufficient power of any test. In addition, dichotomous thinking is dangerous. It is far better to use a ...
- 96.4k
2
votes
Accepted
Should I be using a lower resolution in my LMM if it dosen't match my predictor variables?
If your predictor covariates is for daytime(~12h)then your three-hour movement values can bring some noise or autocorrelation because the predictors won't explain variability at that finer resolution. ...
- 46
2
votes
Accepted
Testing for significance where results are expressed as a ratio to an in group control
A better way to approach this is to model all the growth rates in terms of both Strain and Treatment via multiple linear ...
- 97.6k
1
vote
What does getting a non-significant log(theta) mean?
tl;dr it's probably not anything you care about.
Coefficient tables like this are always (in my experience) testing the estimated coefficient against a null value of zero. In this case, since we are ...
- 45k
1
vote
Deriving Fisher's mysterious estimator for the Unseen Species Problem
Another source is "Computer Age Statistical Inference" by Efron and Hastie. I believe that section 6.2, entitled 'The Missing-Species Problem', contains the derivation you want.
- 2,090
1
vote
How to properly display technical replicates in figures?
I know this post is old, but just in case someone stumbles across this thread with a similar question, take a look at so-called superplots: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7265319/ (doi: ...
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