Checking assumptions of random part

[kaiserdominici]

Dear all,

I would like, if possible, some help to get me started in ML analysis. I have fitted a 2-level random slope model. There is a very useful slide summarising the various assumptions behind this model:



How can I test all these assumptions to see if the use of my model was warranted?

Thank you,

k.

[joneskel]

Unfortunately these are axiomatic assumptions that allow the model to work but they are not directly testable; to my knowledge at least!