Predictive check with ECDF and PIT Δ-ECDFs

Plot of the ECDF (right) of the PIT values (left) for samples from the posterior predictive and observed data.

using ArviZPythonPlots, ArviZExampleData

use_style("arviz-variat")

data = load_example_data("rugby")
pc = plot_ppc_dist_pit(data; kind="ecdf", var_names=["home_points", "away_points"])

See plot_ppc_dist_pit.

See also the EABM chapter on Posterior predictive checks with PIT-ECDFs.