/usr/share/yacas/scripts/statistics.rep/ is in yacas 1.3.6-2+b1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/yacas/scripts/statistics.rep/distributions.ys
/usr/share/yacas/scripts/statistics.rep/distributions.ys.def
/usr/share/yacas/scripts/statistics.rep/hypothesystest.ys
/usr/share/yacas/scripts/statistics.rep/hypothesystest.ys.def
/usr/share/yacas/scripts/statistics.rep/incompletegamma.ys
/usr/share/yacas/scripts/statistics.rep/incompletegamma.ys.def
/usr/share/yacas/scripts/statistics.rep/randomtest.ys
/usr/share/yacas/scripts/statistics.rep/regression.ys
/usr/share/yacas/scripts/statistics.rep/regression.ys.def
/usr/share/yacas/scripts/statistics.rep/statistics.ys
/usr/share/yacas/scripts/statistics.rep/statistics.ys.def