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    $\begingroup$ (+1) About your first sentence: it may not be standard, but it seems to me that Bayesian posteriors could easily (and helpfully) be visualised with violin plots, so they need not be restricted to observations. $\endgroup$ Commented Oct 6, 2022 at 8:56
  • $\begingroup$ "Boxplots ... visualize ... summary information of the observations": But the mean and the standard deviation (of the sample) are summary information, too, aren't they? $\endgroup$ Commented Oct 6, 2022 at 10:09
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    $\begingroup$ Yes, they are. But they are observation-derived, not model-derived. A dotchart (and its worse analogue, the barplot) can also plot model-derived quantities. You could also plot regression coefficient estimates and their standard errors using dotcharts/barplots, but you can't use boxplots for that. $\endgroup$ Commented Oct 6, 2022 at 10:34