X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Flanguage%2Fstats%2Fmann-whitney.c;h=94cb1ceb60b42efef44b0d96e3206eeea30f2cf2;hb=dc9318cc16bfa8aba02cc0f364b1ca3a7cf1de9d;hp=b837177b57a557580860a08d0069257d697f7cac;hpb=1f247f9a51625cdaae7e48b5f723310f05ff6627;p=pspp

diff --git a/src/language/stats/mann-whitney.c b/src/language/stats/mann-whitney.c
index b837177b57..94cb1ceb60 100644
--- a/src/language/stats/mann-whitney.c
+++ b/src/language/stats/mann-whitney.c
@@ -121,11 +121,11 @@ mann_whitney_execute (const struct dataset *ds,
 	mwv->u += mwv->n[0] * (mwv->n[0] + 1) / 2.0;
 	mwv->u -= mwv->rank_sum[0];
 
-	mwv->w = mwv->rank_sum[0];
+	mwv->w = mwv->rank_sum[1];
 	if ( mwv->u > mwv->n[0] * mwv->n[1] / 2.0)
 	  {
 	    mwv->u =  mwv->n[0] * mwv->n[1] - mwv->u;
-	    mwv->w = mwv->rank_sum[1];
+	    mwv->w = mwv->rank_sum[0];
 	  }
 	mwv->z = mwv->u - mwv->n[0] * mwv->n[1] / 2.0;
 	n = mwv->n[0] + mwv->n[1];