I have fitted a multilevel logistic model with brms and afterwards ran pp_check. Can anyone help me interpreting the plot (what is on the horizontal/vertical axes, to start with)? Especially the curve labelled y is unclear to me, as the data are binary.
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Welcome to SO! You maximise your chance of getting a useful answer if you provide a minimal reproducible example. [This post](https://stackoverflow.com/help/minimal-reproducible-example) may help. – Limey Feb 18 '22 at 08:32
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Please provide enough code so others can better understand or reproduce the problem. – Community Feb 20 '22 at 14:49