why is x2 a mixed model variable can you add the variables to a mixed model in a repeated measures pattern why is x2 a nested variable in mixed model why is x1 a fixed effect what is the difference between a mixed model and a mixed model what is nested vs independent variables can you use a mixed model to build a fixed effect model for a mixed model how many independent variables in mixed regression model why is it a mixed model what is variable nesting why is the variable x2 not nested when a variable is nested, which variable is a fixed effect? when to add random variable in mixed model can you add a variable for x2 to a mixed model is x2 a nested variable how to add x2 to mixed model can I add x1 as a fixed effect? can you nest a variable in a mixed model what is the difference between a mixed model and a mixed model? what is the difference between mixed and variable regression?