diff --git a/LICENSE b/LICENSE
index a7d43ff..f295195 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2020 Mehmet Günce Akkoyun
+Copyright (c) 2022 Mehmet Günce Akkoyun
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index 8f485e2..ad2e588 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 ![GitHub release (latest by date)](https://img.shields.io/github/v/release/akkoyun/Statistical) ![arduino-library-badge](https://www.ardu-badge.com/badge/Statistical.svg?) ![Visits Badge](https://badges.pufler.dev/visits/akkoyun/Statistical) ![GitHub stars](https://img.shields.io/github/stars/akkoyun/Statistical?style=flat&logo=github) ![Updated Badge](https://badges.pufler.dev/updated/akkoyun/Statistical) ![PlatformIO Registry](https://badges.registry.platformio.org/packages/akkoyun/library/Statistical.svg) 
 [![Check Arduino](https://github.com/akkoyun/Statistical/actions/workflows/check-arduino.yml/badge.svg)](https://github.com/akkoyun/Statistical/actions/workflows/check-arduino.yml) [![Compile Examples](https://github.com/akkoyun/Statistical/actions/workflows/compile-examples.yml/badge.svg)](https://github.com/akkoyun/Statistical/actions/workflows/compile-examples.yml) [![Spell Check](https://github.com/akkoyun/Statistical/actions/workflows/spell-check.yml/badge.svg)](https://github.com/akkoyun/Statistical/actions/workflows/spell-check.yml)
 
-	Build - 02.00.03
+	Build - 02.00.04
 
 ---
 
diff --git a/docs/index.md b/docs/index.md
index 8f485e2..ad2e588 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -3,7 +3,7 @@
 ![GitHub release (latest by date)](https://img.shields.io/github/v/release/akkoyun/Statistical) ![arduino-library-badge](https://www.ardu-badge.com/badge/Statistical.svg?) ![Visits Badge](https://badges.pufler.dev/visits/akkoyun/Statistical) ![GitHub stars](https://img.shields.io/github/stars/akkoyun/Statistical?style=flat&logo=github) ![Updated Badge](https://badges.pufler.dev/updated/akkoyun/Statistical) ![PlatformIO Registry](https://badges.registry.platformio.org/packages/akkoyun/library/Statistical.svg) 
 [![Check Arduino](https://github.com/akkoyun/Statistical/actions/workflows/check-arduino.yml/badge.svg)](https://github.com/akkoyun/Statistical/actions/workflows/check-arduino.yml) [![Compile Examples](https://github.com/akkoyun/Statistical/actions/workflows/compile-examples.yml/badge.svg)](https://github.com/akkoyun/Statistical/actions/workflows/compile-examples.yml) [![Spell Check](https://github.com/akkoyun/Statistical/actions/workflows/spell-check.yml/badge.svg)](https://github.com/akkoyun/Statistical/actions/workflows/spell-check.yml)
 
-	Build - 02.00.03
+	Build - 02.00.04
 
 ---
 
diff --git a/library.json b/library.json
index 18befeb..90b6fd9 100644
--- a/library.json
+++ b/library.json
@@ -1,6 +1,6 @@
 {
 	"name": "Statistical",
-	"version": "2.0.3",
+	"version": "2.0.4",
 	"keywords": "Statistical, Max, Min, Average, Regression, Data, Sensor, Slope, Offset",
 	"description": "Function calculates statistical parameters of data stream and array",
 	"authors":
diff --git a/library.properties b/library.properties
index a0cc4a1..1404afa 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=Statistical
-version=2.0.3
+version=2.0.4
 author=Gunce Akkoyun <akkoyun@me.com>
 maintainer=Gunce Akkoyun <akkoyun@me.com>
 sentence=Statistic, Sum, Max, Min, Sq_Sum, Arithmetic Average, Geometric Average, RMS Average, Ext RMS Average, Bubble Sort, Median, Standard Deviation, Standard Deviation Error, Coefficient Factor, Average, Stream, Regression, Slope, Data, Analyse
diff --git a/src/Statistical.h b/src/Statistical.h
index a776efc..ae0054c 100644
--- a/src/Statistical.h
+++ b/src/Statistical.h
@@ -250,7 +250,7 @@ template <typename Data_Type>  class Array_Stats {
 			_Sum -= sq(Max());
 
 			// Calculate RSM Average
-			double _Ext_RMS_Avg = (sqrt(_Sum / this->Data_Count));
+			double _Ext_RMS_Avg = (sqrt(_Sum / (this->Data_Count - 2)));
 
 			// Handle Calculation
 			if (isnan(_Ext_RMS_Avg)) _Ext_RMS_Avg = 0;