which data is considered quadratic? do linear and quadratic models need to be mixed can you use a mixed model in a nonlinear dataset can I use a linear mixed model when do you use a mixed model for linear and quadratic data do wing feathers have a linear or quadratic relationship do glms have a linear relationship can a mixed model include linear and quadratic relationship can you use a linear and quadratic mixed model? what is the model called for a nonlinear data sets can a glimm model containing linear and quadratic relationships be used for multiple variables what can i use as the correlation between variables of nlme which data class can be used to construct nlmes can a mixed model have both linear and quadratic relationships? can a linear mixed model be used for a linear model? what kind of data does a mixed model include what type of data is a linear mixed model what data are used to develop a mixed model of individual variation is there a linear relationship between the isotopes in a wing of an individual can a nonlinear mixed model contain both linear and quadratic relationships?