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Questions related from Wim Kaijser
A parameter is defined as a value of the population whereas a statistic is a value of the data, i.e., the mean can be a statistic or parameter. However, it can be quite ambiguously and the...
15 November 2022 5,098 26 View
Determining intervals for the common language effect size (CLES), probability of superiority (PS), Area Under the Curve (AUC) or Exceedance Probability (EP) is possible via multiple method Ruscia...
11 May 2022 6,842 4 View
I try to predict the occurrence of individual aquatic plants (48 species) with Random Forest (RF) models. For this I use six explanatory variables. The datasets are highly unbalanced. Lets say...
03 May 2021 1,225 17 View
With bootstrapping you can obtain the variability of various summary statistics. Recently I came across the Bayesian bootstrap (http://www.sumsar.net/blog/2015/07/easy-bayesian-bootstrap-in-r/). I...
17 April 2021 3,535 4 View
I am trying to predict/discriminate macrophyte groups in rivers (https://snwikaij.shinyapps.io/RF_macrophyte_models). I have run out of viable options to predict groups with an "acceptable" model...
31 March 2021 4,145 5 View
Consider I have 3 groups: 1, 2 and 3. In each group I have 3 species. 1A, 1B, 1C; 2D, 2E, 2F and 3G, 3H, 3I. It is possible to predict where groups occur given some predictors. However, species in...
16 March 2021 4,124 4 View
In ecology specific species can be used to get an indication/estimation of the environmental conditions. A simplistic example, lets assume I find a pike (Esox lucius). We know this species does...
02 February 2021 10,218 4 View
Clustered/random data are very common in data analysis. For example, if I want to model the occurrence (presence/absence) of a species over multiple countries I could suggest that the countries...
01 October 2020 613 2 View
There are numerous of different trophic classes, e.g. 3 oligotrophic, mesotrophic or eutrophic. However, you can even find more defined classifications using a smaller resolution. However, if I am...
25 June 2020 8,703 8 View
Hello, I have a question relating the p-value and confidence intervals from an ANOVA. The p-value, resulting from an ANOVA is an easy summary of statistical differences between more than two...
18 March 2020 1,251 3 View
A hypothetical example (hehe hypothesis), assume we have enough observations, apply both a “frequentist” and “Bayesian'ist'” model (e.g. linear model with Gaussian error distribution and for...
01 January 1970 5,146 59 View
Is it possible to compute credible intervals for the Common Language Effect Size (CLES)? Are there any sources on this? Did anyone else have some thoughts on this or played around with it and...
01 January 1970 5,136 19 View
