Hello, I have a hierarchical regression models that seems to follow a student T distribution but I can’t seem to get a high enough “spike” in the middle nor have the tails spread out as much as the data seems to point to. See my ppc below: [image] When I facet the ppc by coords, they all seem to…

What parameter do I manipulate to spread the tails in a student T distribution?

Jordan_Howell June 30, 2023, 9:36am 5

When I try to leave them as free parameters, I get an error message say mu is a requirement. How do I leave them as free parameters?

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