diff --git a/src/pg/sql/18_outliers.sql b/src/pg/sql/18_outliers.sql
index 454e383..b726bf6 100644
--- a/src/pg/sql/18_outliers.sql
+++ b/src/pg/sql/18_outliers.sql
@@ -30,7 +30,7 @@ BEGIN
   END IF;
 
   SELECT array_agg(
-           outlier_fraction > i / avg_val) INTO out_vals
+           outlier_fraction < i / avg_val) INTO out_vals
     FROM unnest(column_values) As x(i);
 
   RETURN QUERY