abwm - Ansari-Bradley Test with Arbitrarily Missing Data
Performs the two-sample Ansari–Bradley test (Ansari &
Bradley, 1960 <https://www.jstor.org/stable/2237814>) for
univariate, distinct data in the presence of missing values, as
described in Zeng et al. (2025)
<doi:10.48550/arXiv.2509.20332>. This method does not make any
assumptions about the missingness mechanisms and controls the
Type I error regardless of the missing values by taking all
possible missing values into account.
