create fragment for all probability distribution functions

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/calculationfunction/ProDistCalculation.java

@@ -5,7 +5,11 @@ import com.elearning.probabilityandstatisticsanalyserandeducator.dataExtraction.
 import java.util.ArrayList;
 import java.util.Arrays;
 
+import static java.lang.Math.pow;
+import static java.lang.Math.sqrt;
+
 public class ProDistCalculation {
+    //----------------------------Mean_Of_Distribution----------------------------------------------------------------------
     public ArrayList<Object> MeanOfDistribution(String[] a,String[] b) {
         ArrayList<Object> list = new ArrayList<>();
 
@@ -39,7 +43,6 @@ public class ProDistCalculation {
                 meanOfProbabilityDistribution = meanOfProbabilityDistribution + i;
                 System.out.println("Mean Of Distribution:"+ meanOfProbabilityDistribution);
 
-
                 list.add(0, meanOfProbabilityDistribution);
                 list.add(1, probabilityvalue);
                 list.add(2, randomVariables);
@@ -49,7 +52,113 @@ public class ProDistCalculation {
 
         return list;
     }
+    //----------------------------StandardDeviation_Of_Distribution---------------------------------------------------------
+    public ArrayList<Object> StdOfDistriution(String[] a,String[] b) {
+        ArrayList<Object> list = new ArrayList<>();
+
+        int[] randomVariables = new int[a.length];
+        System.out.println("Randomvariablesarray"+Arrays.toString(randomVariables));
+        double[] probabilityvalue = new double[b.length];
+        System.out.println("ProbabilityValue"+Arrays.toString(probabilityvalue));
+
+        for (int k = 0; k < a.length; k++) {
+            try {
+                randomVariables[k] = Integer.parseInt(a[k]);
+                probabilityvalue[k]=Double.parseDouble(b[k]);
+            } catch (NumberFormatException e) {
+                e.printStackTrace();
+            }
+        }
+        double sumofProbability=0.0;
+        int randomVariableX;
+        randomVariableX = randomVariables[a.length];
+        double probabilityvaluePx;
+        probabilityvaluePx=probabilityvalue[b.length];
+        double meanOfProbabilityDistribution;
+        sumofProbability = sumofProbability +probabilityvalue[b.length];
+
+
+
+
+        for(int i=0; i<randomVariables.length;i++){
+            if (a.length == b.length && sumofProbability == 1 ) {
+                meanOfProbabilityDistribution = randomVariableX * probabilityvaluePx;
+                meanOfProbabilityDistribution = meanOfProbabilityDistribution + i;
+                System.out.println("Mean Of Distribution:"+ meanOfProbabilityDistribution);
+
+                double res1 = pow((randomVariableX),2);
+                double res2 = res1 * probabilityvaluePx;
+                res2 = res2 + i;
+                System.out.println("Res2"+ res2);
+               double res3 = res2 - pow((meanOfProbabilityDistribution),2);
+               double finalresult = sqrt(res3);
+
+                list.add(0, finalresult);
+                list.add(1, probabilityvalue);
+                list.add(2, randomVariables);
+                list.add(3,meanOfProbabilityDistribution);
+
+            }
+        }
+
+
+        return list;
+    }
+
+    //----------------------------Variance_Of_Distribution---------------------------------------------------------
+    public ArrayList<Object> VarianceofDistribution(String[] a,String[] b) {
+        ArrayList<Object> list = new ArrayList<>();
+
+        int[] randomVariables = new int[a.length];
+        System.out.println("Randomvariablesarray"+Arrays.toString(randomVariables));
+        double[] probabilityvalue = new double[b.length];
+        System.out.println("ProbabilityValue"+Arrays.toString(probabilityvalue));
+
+        for (int k = 0; k < a.length; k++) {
+            try {
+                randomVariables[k] = Integer.parseInt(a[k]);
+                probabilityvalue[k]=Double.parseDouble(b[k]);
+            } catch (NumberFormatException e) {
+                e.printStackTrace();
+            }
+        }
+        double sumofProbability=0.0;
+        int randomVariableX;
+        randomVariableX = randomVariables[a.length];
+        double probabilityvaluePx;
+        probabilityvaluePx=probabilityvalue[b.length];
+        double meanOfProbabilityDistribution;
+        sumofProbability = sumofProbability +probabilityvalue[b.length];
+
+
+
+
+        for(int i=0; i<randomVariables.length;i++){
+            if (a.length == b.length && sumofProbability == 1 ) {
+                meanOfProbabilityDistribution = randomVariableX * probabilityvaluePx;
+                meanOfProbabilityDistribution = meanOfProbabilityDistribution + i;
+                System.out.println("Mean Of Distribution:"+ meanOfProbabilityDistribution);
+
+                double res1 = pow((randomVariableX),2);
+                double res2 = res1 * probabilityvaluePx;
+                res2 = res2 + i;
+                System.out.println("Res2"+ res2);
+                double res3 = res2 - pow((meanOfProbabilityDistribution),2);
+                double finalresultstd = sqrt(res3);
+                double finalresultvariance =pow((finalresultstd),2);
+
+                list.add(0, finalresultvariance);
+                list.add(1, probabilityvalue);
+                list.add(2, randomVariables);
+                list.add(3,meanOfProbabilityDistribution);
+
+            }
+        }
+
+
+        return list;
+    }
+
 
-    
 
 }

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/calculationfunction/ProbabilityDistributionCalculation.java

@@ -9,6 +9,8 @@ import android.os.Bundle;
 import com.elearning.probabilityandstatisticsanalyserandeducator.R;
 import com.elearning.probabilityandstatisticsanalyserandeducator.calculationfunction.StepsFragment.MeanFragment;
 import com.elearning.probabilityandstatisticsanalyserandeducator.calculationfunction.StepsFragment.MeanOfDistributionFragment;
+import com.elearning.probabilityandstatisticsanalyserandeducator.calculationfunction.StepsFragment.StandardDeviationDistributionFragment;
+import com.elearning.probabilityandstatisticsanalyserandeducator.calculationfunction.StepsFragment.VarianceOfDistributionFragment;
 
 import java.util.ArrayList;
 
@@ -35,8 +37,12 @@ public class ProbabilityDistributionCalculation extends AppCompatActivity {
         ProDistCalculation proDistCalculation = new ProDistCalculation();
 
         ArrayList<Object> meanlist = new ArrayList<Object>();
+        ArrayList<Object> variancelist = new ArrayList<Object>();
+        ArrayList<Object> stddistributionlist = new ArrayList<Object>();
 
         meanlist = proDistCalculation.MeanOfDistribution(array1,array2);
+        variancelist=proDistCalculation.VarianceofDistribution(array1,array2);
+        stddistributionlist=proDistCalculation.StdOfDistriution(array1,array2);
 
 
         des_calculation_type = intent.getStringExtra("des_calculation_type");
@@ -55,5 +61,32 @@ public class ProbabilityDistributionCalculation extends AppCompatActivity {
                 fragmentTransaction.commit();
                 break;
 
+            case "Variance":
+                bundle.putDouble("Variance_Value", (Double) variancelist.get(0));
+                bundle.putIntArray("Dataset_Values", (int[]) variancelist.get(2));
+                bundle.putDoubleArray("Probability_Value", (double[]) variancelist.get(1));
+                bundle.putDouble("Mean_Distribution", (Double) variancelist.get(3));
+
+
+                VarianceOfDistributionFragment varianceOfDistributionFragment = new VarianceOfDistributionFragment();
+                varianceOfDistributionFragment.setArguments(bundle);
+                fragmentTransaction.add(R.id.fragment_container, varianceOfDistributionFragment);
+                fragmentTransaction.commit();
+                break;
+
+            case "Standard Deviation":
+                bundle.putDouble("std_Value", (Double) stddistributionlist.get(0));
+                bundle.putIntArray("Dataset_Values", (int[]) stddistributionlist.get(2));
+                bundle.putDoubleArray("Probability_Value", (double[]) stddistributionlist.get(1));
+                bundle.putDouble("Mean_Distribution", (Double) variancelist.get(3));
+
+
+
+                StandardDeviationDistributionFragment standardDeviationDistributionFragment = new StandardDeviationDistributionFragment();
+                standardDeviationDistributionFragment.setArguments(bundle);
+                fragmentTransaction.add(R.id.fragment_container, standardDeviationDistributionFragment);
+                fragmentTransaction.commit();
+                break;
+
         }
 }}
\ No newline at end of file

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/calculationfunction/StepsFragment/MeanOfDistributionFragment.java

@@ -68,6 +68,7 @@ public class MeanOfDistributionFragment extends Fragment {
 
 
         mdatasetvalues.setMovementMethod(new ScrollingMovementMethod());
+        mtextviewresultpx.setMovementMethod(new ScrollingMovementMethod());
 
 
 

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/calculationfunction/StepsFragment/StandardDeviationDistributionFragment.java

+package com.elearning.probabilityandstatisticsanalyserandeducator.calculationfunction.StepsFragment;
+
+import android.os.Bundle;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+
+import android.text.method.ScrollingMovementMethod;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import com.elearning.probabilityandstatisticsanalyserandeducator.R;
+
+import java.util.Arrays;
+
+
+public class StandardDeviationDistributionFragment extends Fragment {
+
+    TextView mfinalAnswer;
+    TextView mdatasetvalues;
+    TextView mtextviewresultpx;
+    TextView mtextviewstdanswer;
+    TextView mtextviewmeanvalue;
+
+
+    public StandardDeviationDistributionFragment(){
+    }
+
+    @Nullable
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.fragment_standard_deviation_distribution,container,false);
+
+
+        mfinalAnswer = view.findViewById(R.id.textviewfinalanswer);
+        mdatasetvalues =view.findViewById(R.id.txtview_datasetvalues);
+        mtextviewresultpx=view.findViewById(R.id.textview_resultpx);
+        mtextviewstdanswer = view.findViewById(R.id.textview_stdvalueansw);
+        mtextviewmeanvalue=view.findViewById(R.id.meanvalue);
+
+
+
+
+
+        Bundle bundle = getArguments();
+
+        Double stdDistribution = bundle.getDouble("std_Value");
+        Double meandistribution = bundle.getDouble("Mean_Distribution");
+        int[] datasetValues = bundle.getIntArray("Dataset_Values") ;
+        String data = Arrays.toString(datasetValues);
+        String data2 = data.replace('[',' ' );
+        String data3 = data2.replace(']',' ');
+
+        double[] probabilityvalue = bundle.getDoubleArray("Probability_Value");
+        String data4 = Arrays.toString(probabilityvalue);
+        String data5 = data4.replace('[',' ' );
+        String data6 = data5.replace(']',' ');
+
+
+
+
+
+        mfinalAnswer.setText(stdDistribution.toString());
+        mdatasetvalues.setText(data3);
+        mtextviewstdanswer.setText(stdDistribution.toString());
+        mtextviewresultpx.setText(data6);
+        mtextviewmeanvalue.setText(meandistribution.toString());
+
+
+
+        mdatasetvalues.setMovementMethod(new ScrollingMovementMethod());
+        mtextviewresultpx.setMovementMethod(new ScrollingMovementMethod());
+
+
+
+
+
+
+
+
+
+
+
+        return view;
+    }
+
+
+
+}
\ No newline at end of file

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/calculationfunction/StepsFragment/VarianceOfDistributionFragment.java

+package com.elearning.probabilityandstatisticsanalyserandeducator.calculationfunction.StepsFragment;
+
+import android.os.Bundle;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+
+import android.text.method.ScrollingMovementMethod;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import com.elearning.probabilityandstatisticsanalyserandeducator.R;
+
+import java.util.Arrays;
+
+
+public class VarianceOfDistributionFragment extends Fragment {
+
+    TextView mfinalAnswer;
+    TextView mdatasetvalues;
+    TextView mtextviewresultpx;
+    TextView mtextviewvarianceanswer;
+    TextView mtextviewmeanvalue;
+
+
+    public VarianceOfDistributionFragment(){
+    }
+
+    @Nullable
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.fragment_variance_of_distribution,container,false);
+
+
+        mfinalAnswer = view.findViewById(R.id.textviewfinalanswer);
+        mdatasetvalues =view.findViewById(R.id.txtview_datasetvalues);
+        mtextviewresultpx=view.findViewById(R.id.textview_resultpx);
+        mtextviewvarianceanswer = view.findViewById(R.id.textview_variancevalueansw);
+        mtextviewmeanvalue=view.findViewById(R.id.meanvalue);
+
+
+
+
+        Bundle bundle = getArguments();
+
+        Double varianceofdistribution = bundle.getDouble("Variance_Value");
+
+        int[] datasetValues = bundle.getIntArray("Dataset_Values") ;
+        String data = Arrays.toString(datasetValues);
+        String data2 = data.replace('[',' ' );
+        String data3 = data2.replace(']',' ');
+
+        double[] probabilityvalue = bundle.getDoubleArray("Probability_Value");
+        String data4 = Arrays.toString(probabilityvalue);
+        String data5 = data4.replace('[',' ' );
+        String data6 = data5.replace(']',' ');
+
+        Double meandistribution = bundle.getDouble("Mean_Distribution");
+
+
+
+
+
+        mfinalAnswer.setText(varianceofdistribution.toString());
+        mdatasetvalues.setText(data3);
+        mtextviewvarianceanswer.setText(varianceofdistribution.toString());
+        mtextviewresultpx.setText(data6);
+        mtextviewmeanvalue.setText(meandistribution.toString());
+
+
+
+        mdatasetvalues.setMovementMethod(new ScrollingMovementMethod());
+        mtextviewresultpx.setMovementMethod(new ScrollingMovementMethod());
+
+
+
+
+
+
+
+
+
+
+
+        return view;
+    }
+
+
+
+}
\ No newline at end of file

app/src/main/res/layout/fragment_standard_deviation_distribution.xml

+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#FED"
+    tools:context=".calculationfunction.StepsFragment.MeanOfDistributionFragment">
+
+
+    <TextView
+        android:id="@+id/textView17"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="192dp"
+        android:layout_height="35dp"
+        android:layout_marginStart="2dp"
+        android:layout_marginTop="350dp"
+        android:layout_marginEnd="311dp"
+        android:layout_marginBottom="215dp"
+        android:text="Explanation"
+        android:textSize="25sp"
+        android:textStyle="bold"/>
+
+    <TextView
+        android:id="@+id/textView174"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="127dp"
+        android:layout_height="43dp"
+        android:layout_marginStart="2dp"
+        android:layout_marginTop="590dp"
+        android:layout_marginEnd="311dp"
+        android:layout_marginBottom="215dp"
+        android:text="Mean (μ)"
+        android:textSize="25sp"
+        android:textStyle="bold" />
+
+    <TextView
+        android:id="@+id/textView14"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="49dp"
+        android:layout_height="35dp"
+        android:layout_marginStart="130dp"
+        android:layout_marginTop="590dp"
+        android:layout_marginEnd="311dp"
+        android:layout_marginBottom="215dp"
+        android:text="="
+        android:textSize="25sp"
+        android:textStyle="bold" />
+
+    <TextView
+        android:id="@+id/meanvalue"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="197dp"
+        android:layout_height="43dp"
+        android:layout_marginStart="160dp"
+        android:layout_marginTop="590dp"
+        android:layout_marginEnd="311dp"
+        android:layout_marginBottom="215dp"
+        android:background="@drawable/border"
+        android:textSize="25sp"
+        android:textStyle="bold" />
+
+
+    <TextView
+        android:id="@+id/Textview_Step1"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="388dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="3dp"
+        android:layout_marginTop="80dp"
+        android:layout_marginEnd="11dp"
+        android:layout_marginBottom="510dp"
+        android:textSize="20sp"
+        android:textColor="@color/design_default_color_error"
+        android:text="You entered the following dataset X" />
+
+    <TextView
+        android:id="@+id/Textview_Step8"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="388dp"
+        android:layout_height="30dp"
+        android:layout_marginStart="3dp"
+        android:layout_marginTop="160dp"
+        android:layout_marginEnd="11dp"
+        android:layout_marginBottom="510dp"
+        android:text="You entered the following dataset P(X)"
+        android:textColor="@color/design_default_color_error"
+        android:textSize="20sp" />
+
+    <TextView
+        android:id="@+id/textview_step2"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="403dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="1dp"
+        android:layout_marginTop="250dp"
+        android:layout_marginEnd="8dp"
+        android:layout_marginBottom="348dp"
+        android:textSize="20sp"
+        android:textColor="@color/design_default_color_error"
+        android:text="The standard deviation of the given distribution is" />
+
+
+    <TextView
+        android:id="@+id/txtview_datasetvalues"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="386dp"
+        android:layout_height="43dp"
+        android:layout_marginStart="1dp"
+        android:layout_marginTop="110dp"
+        android:layout_marginEnd="179dp"
+        android:layout_marginBottom="458dp"
+        android:scrollbars="vertical"
+        android:textSize="17sp"
+        android:textStyle="bold"
+        android:background="@drawable/border"
+        />
+
+    <TextView
+        android:id="@+id/textview_stdvalueansw"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="386dp"
+        android:layout_height="43dp"
+        android:layout_marginStart="1dp"
+        android:layout_marginTop="310dp"
+        android:layout_marginBottom="288dp"
+        android:textSize="17sp"
+        android:textStyle="bold"
+        android:background="@drawable/border"/>
+
+
+    <TextView
+        android:id="@+id/textview_step3"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="404dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="1dp"
+        android:layout_marginTop="390dp"
+        android:layout_marginEnd="5dp"
+        android:layout_marginBottom="156dp"
+        android:text="In order to find the standard deviation of the given distribution, we will use the following formula:"
+        android:textColor="@color/purple_700"
+        android:textStyle="italic" />
+
+    <TextView
+        android:id="@+id/txtview_step3sofdatas"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="398dp"
+        android:layout_height="78dp"
+        android:layout_marginStart="1dp"
+        android:layout_marginTop="640dp"
+        android:layout_marginEnd="176dp"
+        android:layout_marginBottom="96dp"
+        android:text="So, first we need to multiply each value of X by each probability P(X), then add these results together"
+        android:textColor="@color/design_default_color_error"
+        android:textSize="20sp" />
+
+    <TextView
+        android:id="@+id/textView15"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="381dp"
+        android:layout_height="37dp"
+        android:layout_marginStart="5dp"
+        android:layout_marginTop="20dp"
+        android:layout_marginEnd="309dp"
+        android:layout_marginBottom="586dp"
+        android:text="Result - Standard Deviation"
+        android:textAlignment="center"
+        android:textColor="@color/purple_500"
+        android:textSize="30sp"
+        android:textStyle="bold" />
+
+
+    <TextView
+        android:id="@+id/textviewfinalanswer"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="392dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="1dp"
+        android:layout_marginTop="720dp"
+        android:layout_marginEnd="200dp"
+        android:layout_marginBottom="176dp"
+        android:background="@drawable/border"
+        android:textSize="17sp"
+        android:textStyle="bold" />
+
+
+    <TextView
+        android:id="@+id/textview_resultpx"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="386dp"
+        android:layout_height="43dp"
+        android:layout_marginStart="1dp"
+        android:layout_marginTop="200dp"
+        android:layout_marginEnd="200dp"
+        android:layout_marginBottom="176dp"
+        android:scrollbars="vertical"
+        android:textSize="17sp"
+        android:textStyle="bold"
+        android:background="@drawable/border"/>
+
+    <ImageView
+        android:id="@+id/imageView3"
+        style="@style/Animation.Design.BottomSheetDialog"
+        android:layout_width="296dp"
+        android:layout_height="81dp"
+        android:layout_marginStart="50dp"
+        android:layout_marginTop="480dp"
+        android:layout_marginEnd="200dp"
+        android:layout_marginBottom="176dp"
+        android:background="@drawable/border"
+        android:src="@drawable/stddistribution"
+        tools:ignore="ContentDescription" />
+
+
+
+
+</FrameLayout>

app/src/main/res/layout/fragment_variance_of_distribution.xml

+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#FED"
+    tools:context=".calculationfunction.StepsFragment.VarianceOfDistributionFragment">
+
+
+    <TextView
+        android:id="@+id/textView17"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="192dp"
+        android:layout_height="35dp"
+        android:layout_marginStart="2dp"
+        android:layout_marginTop="350dp"
+        android:layout_marginEnd="311dp"
+        android:layout_marginBottom="215dp"
+        android:text="Explanation"
+        android:textSize="25sp"
+        android:textStyle="bold"/>
+
+
+    <TextView
+        android:id="@+id/Textview_Step1"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="388dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="3dp"
+        android:layout_marginTop="80dp"
+        android:layout_marginEnd="11dp"
+        android:layout_marginBottom="510dp"
+        android:textSize="20sp"
+        android:textColor="@color/design_default_color_error"
+        android:text="You entered the following dataset X" />
+
+    <TextView
+        android:id="@+id/Textview_Step8"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="388dp"
+        android:layout_height="30dp"
+        android:layout_marginStart="3dp"
+        android:layout_marginTop="160dp"
+        android:layout_marginEnd="11dp"
+        android:layout_marginBottom="510dp"
+        android:text="You entered the following dataset P(X)"
+        android:textColor="@color/design_default_color_error"
+        android:textSize="20sp" />
+
+    <TextView
+        android:id="@+id/textview_step2"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="403dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="1dp"
+        android:layout_marginTop="250dp"
+        android:layout_marginEnd="8dp"
+        android:layout_marginBottom="348dp"
+        android:textSize="20sp"
+        android:textColor="@color/design_default_color_error"
+        android:text="The standard deviation of the given distribution is" />
+
+
+    <TextView
+        android:id="@+id/txtview_datasetvalues"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="386dp"
+        android:layout_height="43dp"
+        android:layout_marginStart="1dp"
+        android:layout_marginTop="110dp"
+        android:layout_marginEnd="179dp"
+        android:layout_marginBottom="458dp"
+        android:scrollbars="vertical"
+        android:textSize="17sp"
+        android:textStyle="bold"
+        android:background="@drawable/border"
+        />
+
+    <TextView
+        android:id="@+id/textview_variancevalueansw"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="386dp"
+        android:layout_height="43dp"
+        android:layout_marginStart="1dp"
+        android:layout_marginTop="310dp"
+        android:layout_marginBottom="288dp"
+        android:textSize="17sp"
+        android:textStyle="bold"
+        android:background="@drawable/border"/>
+
+
+    <TextView
+        android:id="@+id/textview_step3"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="404dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="1dp"
+        android:layout_marginTop="390dp"
+        android:layout_marginEnd="5dp"
+        android:layout_marginBottom="156dp"
+        android:text="In order to find the variance of the given distribution,we will use the following formula"
+        android:textColor="@color/purple_700"
+        android:textStyle="italic" />
+
+    <TextView
+        android:id="@+id/txtview_step3sofdatas"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="398dp"
+        android:layout_height="85dp"
+        android:layout_marginStart="1dp"
+        android:layout_marginTop="640dp"
+        android:layout_marginEnd="176dp"
+        android:layout_marginBottom="96dp"
+        android:text="So, first we need to multiply each value of X by each probability P(X), then add these results together"
+        android:textColor="@color/design_default_color_error"
+        android:textSize="20sp" />
+    <TextView
+        android:id="@+id/textView174"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="127dp"
+        android:layout_height="43dp"
+        android:layout_marginStart="2dp"
+        android:layout_marginTop="590dp"
+        android:layout_marginEnd="311dp"
+        android:layout_marginBottom="215dp"
+        android:text="Mean (μ)"
+        android:textSize="25sp"
+        android:textStyle="bold" />
+
+    <TextView
+        android:id="@+id/textView14"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="49dp"
+        android:layout_height="35dp"
+        android:layout_marginStart="130dp"
+        android:layout_marginTop="590dp"
+        android:layout_marginEnd="311dp"
+        android:layout_marginBottom="215dp"
+        android:text="="
+        android:textSize="25sp"
+        android:textStyle="bold" />
+
+    <TextView
+        android:id="@+id/meanvalue"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="197dp"
+        android:layout_height="43dp"
+        android:layout_marginStart="160dp"
+        android:layout_marginTop="590dp"
+        android:layout_marginEnd="311dp"
+        android:layout_marginBottom="215dp"
+        android:background="@drawable/border"
+        android:textSize="25sp"
+        android:textStyle="bold" />
+
+    <TextView
+        android:id="@+id/textView15"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="323dp"
+        android:layout_height="37dp"
+        android:layout_marginStart="20dp"
+        android:layout_marginTop="20dp"
+        android:layout_marginEnd="309dp"
+        android:layout_marginBottom="586dp"
+        android:text="Result - Variance"
+        android:textAlignment="center"
+        android:textSize="30sp"
+        android:textColor="@color/purple_500"
+        android:textStyle="bold" />
+
+
+    <TextView
+        android:id="@+id/textviewfinalanswer"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="392dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="1dp"
+        android:layout_marginTop="720dp"
+        android:layout_marginEnd="200dp"
+        android:layout_marginBottom="176dp"
+        android:background="@drawable/border"
+        android:textSize="17sp"
+        android:textStyle="bold" />
+
+
+    <TextView
+        android:id="@+id/textview_resultpx"
+        style="@style/Base.TextAppearance.AppCompat.Large"
+        android:layout_width="386dp"
+        android:layout_height="43dp"
+        android:layout_marginStart="1dp"
+        android:layout_marginTop="200dp"
+        android:layout_marginEnd="200dp"
+        android:layout_marginBottom="176dp"
+        android:scrollbars="vertical"
+        android:textSize="17sp"
+        android:textStyle="bold"
+        android:background="@drawable/border"/>
+
+    <ImageView
+        android:id="@+id/imageView3"
+        style="@style/Animation.Design.BottomSheetDialog"
+        android:layout_width="296dp"
+        android:layout_height="81dp"
+        android:layout_marginStart="50dp"
+        android:layout_marginTop="480dp"
+        android:layout_marginEnd="200dp"
+        android:layout_marginBottom="176dp"
+        android:background="@drawable/border"
+        android:src="@drawable/variancedistribution"
+        tools:ignore="ContentDescription" />
+
+
+
+
+</FrameLayout>