X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmath%2Ftrimmed-mean.c;h=a687dd9b5fcffcd711ed983d0566edbb54847213;hb=e04c680aae366f5af85cd50776875fcdf3c8927a;hp=2d44d0dc08cc3bba114f4ed9004c17eaf9ae6a7f;hpb=97f2fd8ca9f4a977ed055e145eb722a52e0e6cc7;p=pspp

diff --git a/src/math/trimmed-mean.c b/src/math/trimmed-mean.c
index 2d44d0dc08..a687dd9b5f 100644
--- a/src/math/trimmed-mean.c
+++ b/src/math/trimmed-mean.c
@@ -33,11 +33,11 @@ acc (struct statistic *s, const struct ccase *cx UNUSED, double c, double cc, do
   struct trimmed_mean *tm = UP_CAST (s, struct trimmed_mean, parent.parent);
   struct order_stats *os = &tm->parent;
 
-  if ( cc > os->k[0].tc && cc < os->k[1].tc)
-      tm->sum += c * y;
+  if ( cc > os->k[0].tc && cc <= os->k[1].tc)
+    tm->sum += c * y;
 
-  if ( tm->cyk1p1 == SYSMIS && cc >os->k[0].tc)
-      tm->cyk1p1 = c * y;
+  if ( tm->cyk1p1 == SYSMIS && cc > os->k[0].tc)
+    tm->cyk1p1 = c * y;
 }
 
 static void
@@ -83,14 +83,11 @@ trimmed_mean_calculate (const struct trimmed_mean *tm)
 
   return
     (
-     (os->k[0].cc_p1 - os->k[0].tc) * os->k[0].y_p1
-     -
-     (os->k[1].cc - os->k[1].tc) * os->k[1].y_p1
+     (os->k[0].cc - os->k[0].tc) * os->k[0].y_p1
      +
-     tm->sum
-     -
-     tm->cyk1p1
+      (tm->w - os->k[1].cc - os->k[0].tc) * os->k[1].y_p1
+     +
+      tm->sum
      )
-    /
-    ( (1.0 - 2 * tm->tail) * tm->w);
+    / ((1.0 - tm->tail * 2) * tm->w);
 }