diff --git a/epmet-module/data-statistical/data-statistical-server/src/main/java/com/epmet/support/normalizing/batch/BatchScoreCalculator.java b/epmet-module/data-statistical/data-statistical-server/src/main/java/com/epmet/support/normalizing/batch/BatchScoreCalculator.java
index 75e78ea215..b4f2fd4677 100644
--- a/epmet-module/data-statistical/data-statistical-server/src/main/java/com/epmet/support/normalizing/batch/BatchScoreCalculator.java
+++ b/epmet-module/data-statistical/data-statistical-server/src/main/java/com/epmet/support/normalizing/batch/BatchScoreCalculator.java
@@ -1,5 +1,6 @@
 package com.epmet.support.normalizing.batch;
 
+import com.epmet.support.normalizing.Correlation;
 import com.epmet.support.normalizing.ScoreCalculator;
 
 import java.math.BigDecimal;
@@ -70,9 +71,13 @@ public class BatchScoreCalculator {
                 if (maxValue.compareTo(minValue) == 0) {
                     //*((max-min)/ (Math.PI/2))+min
                     //Math.atan(new Double(vo.getSampleValue().toString()))*
-                    normalizeValue = new BigDecimal(Math.atan(new Double(vo.getSampleValue().toString())))
+                    normalizeValue = new BigDecimal(Math.atan(new Double(getFinalSampleValue(vo.getSampleValue(), threshold).toString())))
                             .multiply(
                                     (maxValue.subtract(minValue).divide(new BigDecimal(Math.PI / 2), 10, RoundingMode.UNNECESSARY))).add(minValue).setScale(6, RoundingMode.HALF_UP);
+                    //
+                    if (scoreCalculator.getCorrelation().getCode().equals(Correlation.NEGATIVE)) {
+                        normalizeValue = maxValue.subtract(normalizeValue);
+                    }
 
                 }
 
diff --git a/epmet-module/data-statistical/data-statistical-server/src/test/java/com/epmet/stats/test/normalizing/MathUtilTest.java b/epmet-module/data-statistical/data-statistical-server/src/test/java/com/epmet/stats/test/normalizing/MathUtilTest.java
index ff0811d4c5..408f837691 100644
--- a/epmet-module/data-statistical/data-statistical-server/src/test/java/com/epmet/stats/test/normalizing/MathUtilTest.java
+++ b/epmet-module/data-statistical/data-statistical-server/src/test/java/com/epmet/stats/test/normalizing/MathUtilTest.java
@@ -20,7 +20,7 @@ public class MathUtilTest {
 
         BigDecimal maxValue = new BigDecimal(100);
         BigDecimal minValue = new BigDecimal(60);
-        BigDecimal normalizeValue = new BigDecimal(Math.atan(new Double("4")))
+        BigDecimal normalizeValue = new BigDecimal(Math.atan(new Double("0")))
                 .multiply(
                         (maxValue.subtract(minValue).divide(new BigDecimal(Math.PI / 2), 10, RoundingMode.HALF_UP))).add(minValue).setScale(6, RoundingMode.HALF_UP);
         System.out.println(normalizeValue);