Calonico-Cattaneo-Titiunik (CCT) MSE-optimal bandwidth

Usage

morie_rdd_bandwidth_cct(x, y, cutoff = 0, kernel = "triangular", p = 1)

x: Numeric vector of running-variable values (used by bandwidth selectors + density tests that don't take a data.frame).
y: Numeric vector of outcome values aligned with x.
cutoff: Numeric scalar; the threshold on running. Default 0 (the canonical normalisation).
kernel: One of "triangular" (default), "epanechnikov", "uniform", or "gaussian".
p: Integer; local-polynomial order (default 1 for local- linear). 2 picks up quadratic curvature for bias correction.