Recently, I was contacted with an question about R code. A befriended researcher was working with nested data, which was unbalanced. He was working with data in a ‘long’ format: all observations nested within the same group had the same identification number. But, the number of observations in each of the groups differed (hence: unbalanced [...]
"The extra-ordinary lies within the curve of normality"
Influence.ME: an R package providing tools for detecting influential data in mixed models.