unequal sampling effort

  1. D

    General Linear Model using proportions as raw data - transformation needed?

    Hi, I have become confused in my reading of analysis of proportions. I was all set to analyse my data using a general linear model after transforming the proportions using an arcsine-square root transformation, but now I'm not sure if this is a correct approach and more importantly why/why...
  2. A

    unequal sampling effort - binomial generalized linear model - offset

    How to take into account heterogeneity in sampling effort in a binomial glm (presence absence) ? Edit I want to link species presence with environmental variables. But, species data come from camera trapping and camera traps didn't work the same total period (some cameras worked during 50...