do you need to aggregate data in mixed effects do the aggregates need to be used when you have a mixed effect should you aggregate when using mixed effects can i aggregate data in mixed effects how many data is aggregated for mixed effects can we use mixed effects as dependent variables what is the difference between lmer and mixed effects when is data aggregated why does an lmer variable need to be aggregated? when use mixed effect model lmer is aggregated when using mixed effects how to aggregate data when you use mixed effects can you aggregate data how often to aggregate mixed-effects which variable is used to aggregate data in mixed effect analysis? why do we aggregate mixed effects if a mixed effect is a variable what does aggregate mean mean mean mean when do you need to aggregate data for mixed effects model if mixed effects model is used how much aggregate data how many response for mixed effects linear model do we need to aggregate in lmer