diff --git a/MLPP/OutlierFinder/OutlierFinder.cpp b/MLPP/OutlierFinder/OutlierFinder.cpp
index 836bac5..29fa29e 100644
--- a/MLPP/OutlierFinder/OutlierFinder.cpp
+++ b/MLPP/OutlierFinder/OutlierFinder.cpp
@@ -15,12 +15,12 @@ namespace MLPP{
     }
 
     std::vector<std::vector<double>> OutlierFinder::modelSetTest(std::vector<std::vector<double>> inputSet){
-        Stat op;
+        Stat stat;
         std::vector<std::vector<double>> outliers;
         outliers.resize(inputSet.size());
         for(int i = 0; i < inputSet.size(); i++){
             for(int j = 0; j < inputSet[i].size(); j++){
-                double z = (inputSet[i][j] - op.mean(inputSet[i])) / op.standardDeviation(inputSet[i]);
+                double z = (inputSet[i][j] - stat.mean(inputSet[i])) / stat.standardDeviation(inputSet[i]);
                 if(abs(z) > threshold){
                     outliers[i].push_back(inputSet[i][j]);
                 }
@@ -30,10 +30,10 @@ namespace MLPP{
     }
 
     std::vector<double> OutlierFinder::modelTest(std::vector<double> inputSet){
-        Stat op;
+        Stat stat;
         std::vector<double> outliers;
         for(int i = 0; i < inputSet.size(); i++){
-            double z = (inputSet[i] - op.mean(inputSet)) / op.standardDeviation(inputSet);
+            double z = (inputSet[i] - stat.mean(inputSet)) / stat.standardDeviation(inputSet);
             if(abs(z) > threshold){
                 outliers.push_back(inputSet[i]);
             }