diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df01.pas b/InstallerSamples/MachineLearning/DataFrameABC/df01.pas
new file mode 100644
index 000000000..ec728a97a
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df01.pas
@@ -0,0 +1,13 @@
+// Загрузка и просмотр данных
+uses DataFrameABC;
+
+begin
+  var df := DataFrame.FromCsvText('''
+  name,age,score
+  Alice,20,85
+  Bob,22,90
+  Charlie,21,78
+  ''');
+  
+  df.Print;
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df01a.pas b/InstallerSamples/MachineLearning/DataFrameABC/df01a.pas
new file mode 100644
index 000000000..42ea7ed4d
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df01a.pas
@@ -0,0 +1,7 @@
+// Загрузка данных из CSV-файла
+uses DataFrameABC;
+
+begin
+  var df := DataFrame.FromCsv('people.csv');
+  df.Print;
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df02.pas b/InstallerSamples/MachineLearning/DataFrameABC/df02.pas
new file mode 100644
index 000000000..f6bdc4129
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df02.pas
@@ -0,0 +1,13 @@
+// Выбор столбцов (Select)
+uses DataFrameABC;
+
+begin
+  var df := DataFrame.FromCsvText('''
+  name,age,score
+  Alice,20,85
+  Bob,22,90
+  Charlie,21,78
+  ''');
+  
+  df.Select(['name', 'score']).Print;
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df03.pas b/InstallerSamples/MachineLearning/DataFrameABC/df03.pas
new file mode 100644
index 000000000..42f17bb42
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df03.pas
@@ -0,0 +1,13 @@
+// Переименование столбцов (Rename)
+uses DataFrameABC;
+
+begin
+  var df := DataFrame.FromCsvText('''
+  name,age,score
+  Alice,20,85
+  Bob,22,90
+  Charlie,21,78
+  ''');
+  
+  df.Rename('score', 'exam_score').Print;
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df04.pas b/InstallerSamples/MachineLearning/DataFrameABC/df04.pas
new file mode 100644
index 000000000..4352df28c
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df04.pas
@@ -0,0 +1,13 @@
+// Удаление столбцов (Drop)
+uses DataFrameABC;
+
+begin
+  var df := DataFrame.FromCsvText('''
+  name,age,score
+  Alice,20,85
+  Bob,22,90
+  Charlie,21,78
+  ''');
+  
+  df.Drop(['score']).Print;
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df05.pas b/InstallerSamples/MachineLearning/DataFrameABC/df05.pas
new file mode 100644
index 000000000..07b7f799d
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df05.pas
@@ -0,0 +1,13 @@
+// Простая фильтрация
+uses DataFrameABC;
+
+begin
+  var df := DataFrame.FromCsvText('''
+  name,age,score
+  Alice,20,85
+  Bob,22,90
+  Charlie,21,78
+  ''');
+  
+  df.Filter(row -> row.Int('age') >= 21).Print;
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df06.pas b/InstallerSamples/MachineLearning/DataFrameABC/df06.pas
new file mode 100644
index 000000000..a28193833
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df06.pas
@@ -0,0 +1,16 @@
+// Фильтрация с NA
+uses DataFrameABC;
+
+begin
+  var df := DataFrame.FromCsvText('''
+  name,age,score
+  Alice,20,85
+  Bob,22,90
+  Charlie,21,78
+  Bob,22,90
+  Clara,,78
+  Kat,21,NA
+  ''');
+  
+  df.Filter(row -> row.IsValid('score')).Print;
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df07.pas b/InstallerSamples/MachineLearning/DataFrameABC/df07.pas
new file mode 100644
index 000000000..d5f11d132
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df07.pas
@@ -0,0 +1,16 @@
+// Новый числовой столбец
+uses DataFrameABC;
+
+begin
+  var df := DataFrame.FromCsvText('''
+  name,age,score
+  Alice,20,85
+  Bob,22,90
+  Charlie,21,78
+  Bob,22,90
+  Clara,,78
+  Kat,21,NA
+  ''');
+  
+  df.WithColumnBool('passed', row -> row.Int('score') >= 80).Print;
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df08.pas b/InstallerSamples/MachineLearning/DataFrameABC/df08.pas
new file mode 100644
index 000000000..5a80d5838
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df08.pas
@@ -0,0 +1,16 @@
+// Обработка ошибок (NA)
+uses DataFrameABC;
+
+begin
+  var df := DataFrame.FromCsvText('''
+  name,age,score
+  Alice,20,85
+  Bob,22,90
+  Charlie,21,78
+  Bob,22,90
+  Clara,,78
+  Kat,21,NA
+  ''');
+  
+  df.WithColumnFloat('normalized', row -> row.Float('score') / 100).Print;
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df09.pas b/InstallerSamples/MachineLearning/DataFrameABC/df09.pas
new file mode 100644
index 000000000..d6f64f846
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df09.pas
@@ -0,0 +1,18 @@
+// Простые статистики
+uses DataFrameABC;
+
+begin
+  var df := DataFrame.FromCsvText('''
+  name,age,score
+  Alice,20,85
+  Bob,22,90
+  Charlie,21,78
+  Bob,22,90
+  Clara,,78
+  Kat,21,NA
+  ''');
+  
+  df.Min('score').Println;
+  df.Mean('score').Println;
+  df.Max('score').Println;
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df10.pas b/InstallerSamples/MachineLearning/DataFrameABC/df10.pas
new file mode 100644
index 000000000..951ccb6ad
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df10.pas
@@ -0,0 +1,17 @@
+// Describe одного столбца
+uses DataFrameABC;
+
+begin
+  var df := DataFrame.FromCsvText('''
+  name,age,score
+  Alice,20,85
+  Bob,22,90
+  Charlie,21,78
+  Bob,22,90
+  Clara,,78
+  Kat,21,NA
+  ''');
+  
+  var d := df.Describe('score');
+  Print(d.Count,d.Min,d.Max,d.Mean,d.Std);
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df11.pas b/InstallerSamples/MachineLearning/DataFrameABC/df11.pas
new file mode 100644
index 000000000..c91fb23be
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df11.pas
@@ -0,0 +1,16 @@
+// Describe всех числовых столбцов
+uses DataFrameABC;
+
+begin
+  var df := DataFrame.FromCsvText('''
+  name,age,score
+  Alice,20,85
+  Bob,22,90
+  Charlie,21,78
+  Bob,22,90
+  Clara,,78
+  Kat,21,NA
+  ''');
+  
+  df.Describe.PrintLines;
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df12.pas b/InstallerSamples/MachineLearning/DataFrameABC/df12.pas
new file mode 100644
index 000000000..6778bbedd
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df12.pas
@@ -0,0 +1,16 @@
+// GroupBy + Count
+uses DataFrameABC;
+
+begin
+  var df := DataFrame.FromCsvText('''
+  name,age,score
+  Alice,20,85
+  Bob,22,90
+  Charlie,21,78
+  Bob,22,90
+  Clara,,78
+  Kat,21,NA
+  ''');
+  
+  df.GroupBy('age').Count.Print;
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df13.pas b/InstallerSamples/MachineLearning/DataFrameABC/df13.pas
new file mode 100644
index 000000000..a59312960
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df13.pas
@@ -0,0 +1,16 @@
+// GroupBy + Mean
+uses DataFrameABC;
+
+begin
+  var df := DataFrame.FromCsvText('''
+  name,age,score
+  Alice,20,85
+  Bob,22,90
+  Charlie,21,78
+  Bob,22,90
+  Clara,,78
+  Kat,21,NA
+  ''');
+  
+  df.GroupBy('age').Mean('score').Print;
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df14.pas b/InstallerSamples/MachineLearning/DataFrameABC/df14.pas
new file mode 100644
index 000000000..87a780a8c
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df14.pas
@@ -0,0 +1,16 @@
+// GroupBy + Describe
+uses DataFrameABC;
+
+begin
+  var df := DataFrame.FromCsvText('''
+  name,age,score
+  Alice,20,85
+  Bob,22,90
+  Charlie,21,78
+  Bob,22,90
+  Clara,,78
+  Kat,21,NA
+  ''');
+  
+  df.GroupBy('age').Describe('score').Print;
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df15.pas b/InstallerSamples/MachineLearning/DataFrameABC/df15.pas
new file mode 100644
index 000000000..d8f09acad
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df15.pas
@@ -0,0 +1,20 @@
+// Inner Join
+uses DataFrameABC;
+
+begin
+  var students := DataFrame.FromCsvText('''
+  id,name
+  1,Alice
+  2,Bob
+  3,Charlie
+  ''');
+  
+  var scores := DataFrame.FromCsvText('''
+  id,score
+  1,85
+  2,90
+  4,70
+  ''');
+  
+  students.Join(scores, 'id').Print;
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df16.pas b/InstallerSamples/MachineLearning/DataFrameABC/df16.pas
new file mode 100644
index 000000000..3e53a2ade
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df16.pas
@@ -0,0 +1,20 @@
+// Left Join
+uses DataFrameABC;
+
+begin
+  var students := DataFrame.FromCsvText('''
+  id,name
+  1,Alice
+  2,Bob
+  3,Charlie
+  ''');
+  
+  var scores := DataFrame.FromCsvText('''
+  id,score
+  1,85
+  2,90
+  4,70
+  ''');
+  
+  students.Join(scores, 'id', jkLeft).Print;
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df17.pas b/InstallerSamples/MachineLearning/DataFrameABC/df17.pas
new file mode 100644
index 000000000..aa6d27875
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df17.pas
@@ -0,0 +1,20 @@
+// Full Join
+uses DataFrameABC;
+
+begin
+  var students := DataFrame.FromCsvText('''
+  id,name
+  1,Alice
+  2,Bob
+  3,Charlie
+  ''');
+  
+  var scores := DataFrame.FromCsvText('''
+  id,score
+  1,85
+  2,90
+  4,70
+  ''');
+  
+  students.Join(scores, 'id', jkFull).Print;
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df18.pas b/InstallerSamples/MachineLearning/DataFrameABC/df18.pas
new file mode 100644
index 000000000..818113d82
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df18.pas
@@ -0,0 +1,13 @@
+// Сортировка
+uses DataFrameABC;
+
+begin
+  var df := DataFrame.FromCsvText('''
+  name,age,score
+  Alice,20,85
+  Bob,22,90
+  Charlie,21,78
+  ''');
+
+  df.SortBy('score', descending := True).Print;
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df19.pas b/InstallerSamples/MachineLearning/DataFrameABC/df19.pas
new file mode 100644
index 000000000..02de4714b
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df19.pas
@@ -0,0 +1,16 @@
+// Просмотр больших данных
+uses DataFrameABC;
+
+begin
+  var df := DataFrame.FromCsvText('''
+  name,age,score
+  Alice,20,85
+  Bob,22,90
+  Charlie,21,78
+  Bob,22,90
+  Clara,,78
+  Kat,21,NA
+  ''');
+  
+  df.PrintPreview(3);
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df20.pas b/InstallerSamples/MachineLearning/DataFrameABC/df20.pas
new file mode 100644
index 000000000..90a188879
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df20.pas
@@ -0,0 +1,21 @@
+// Полный аналитический сценарий
+uses DataFrameABC;
+
+begin
+  var df := DataFrame.FromCsvText('''
+  name,age,score
+  Alice,20,85
+  Bob,22,90
+  Charlie,21,78
+  Bob,22,90
+  Clara,,78
+  Kat,21,NA
+  ''');
+  
+  df
+  .Filter(r -> r.IsValid('score'))
+  .SortBy('age', descending := True)
+  .GroupBy('age')
+  .Mean('score')
+  .PrintPreview(3);
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/df21.pas b/InstallerSamples/MachineLearning/DataFrameABC/df21.pas
new file mode 100644
index 000000000..2a8fa4a88
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/df21.pas
@@ -0,0 +1,18 @@
+// Сортировка по нескольким полям
+uses DataFrameABC;
+
+begin
+  var df := DataFrame.FromCsvText('''
+  name,age,score
+  Alice,20,85
+  Bob,22,90
+  Charlie,21,78
+  Bob,22,90
+  Clara,,78
+  Kat,21,NA
+  ''');
+  
+  df.Filter(r -> r.IsValid('score'))
+    .SortBy(['age','score'],[True,True])
+    .Println;
+end.
\ No newline at end of file
diff --git a/InstallerSamples/MachineLearning/DataFrameABC/people.csv b/InstallerSamples/MachineLearning/DataFrameABC/people.csv
new file mode 100644
index 000000000..5cc40c626
--- /dev/null
+++ b/InstallerSamples/MachineLearning/DataFrameABC/people.csv
@@ -0,0 +1,4 @@
+name,age,score
+Alice,20,85
+Bob,22,90
+Charlie,21,78
\ No newline at end of file