Contents
How do you interpret a 3 way interaction?
A three way interaction means that the interaction among the two factors (A * B) is different across the levels of the third factor (C). If the interaction of A * B differs a lot among the levels of C then it sounds reasonable that the two way interaction A * B should not appear as significant.
How many predictors are involved in an 3 way interaction?
three predictors
A three way interaction. That means that there are at least three predictors.
What is two-way interaction?
in a two-way analysis of variance, the joint effect of both independent variables, a and b, on a dependent variable.
How do I report and interpret the output from linear mixed?
How do I report and interpret the output from linear mixed models with interaction terms? So, we are doing a linear mixed effects model for analyzing some results of our study.
Is the mixed linear model mis-specified or incorrect?
The model is mis-specified and you should not interpret it. It is incorrect because you have interacted case with the linear time variable, but not with the quadratic term. Similarly, it is a mis-specification to have linear time, but not quadratic time in the random slopes.
When do multiple regression models contain interaction terms?
Multiple regression models often contain interaction terms. This FAQ page covers the situation in which there are two moderator variables which jointly influence the regression of the dependent variable on an independent variable. In other words, a regression model that has a significant three-way interaction of continuous variables.
Which is the simplest way to interpret interactions?
I have found that the simplest method of interpreting interactions is visually: make graphs of your DV at different levels of your IVs. Since you have two numeric IVs and 3 categorical ones, you could make 6 graphs.