Si-Chong Chen

2 Questions 3 Answers 0 Followers

Questions related from Si-Chong Chen

In GLMM, is it problematic if the number of levels of a grouping factor for the random effects is close to the number of observations?

Say I would like to use species as the random-effects term in the model. I have 800 species in total. Among them, 600 species have only one record, 100 have 2-4 records, and 100 have 5-15 records...

08 April 2019 7,311 2 View

The direction of seed terminal velocity -- overall or just vertical?

I am measuring terminal velocity of Composite seeds in a closed chamber (assumed to be steady air). The falling seeds have some slight lateral movement, generating a slight velocity in the...

25 November 2016 7,914 7 View