#include <libpspp/str.h>
#include <data/variable.h>
#include <data/procedure.h>
-#include <libpspp/alloc.h>
#include <libpspp/misc.h>
#include "group.h"
#include <math.h>
#include <stdlib.h>
+#include "xalloc.h"
+
/* This module calculates the Levene statistic for variables.