diff --git a/statapp/main_window.py b/statapp/main_window.py
index 3fadbdc..38c0fa1 100644
--- a/statapp/main_window.py
+++ b/statapp/main_window.py
@@ -4,7 +4,7 @@ from PySide2.QtGui import QIcon
 from PySide2.QtWidgets import QMainWindow, QMessageBox, QApplication
 
 from statapp.generate_factor_window import GenerateFactorWindow, INDIRECT_LINK
-from statapp.models.data_model import DataModel
+from statapp.models.input_values_model import InputValuesModel
 from statapp.generate_window import GenerateWindow
 from statapp.about_window import AboutWindow
 from statapp.models.fileslc_model import FileSLCModel
@@ -25,7 +25,7 @@ class MainWindow(QMainWindow):
         self.setWindowIcon(icon)
 
         self.isDataChanged = False
-        self.model = DataModel()
+        self.model = InputValuesModel()
         self.fileModel = FileSLCModel()
         self.ui.tableView.setModel(self.model)
 
diff --git a/statapp/models/data_model.py b/statapp/models/data_model.py
deleted file mode 100644
index c9ade7d..0000000
--- a/statapp/models/data_model.py
+++ /dev/null
@@ -1,59 +0,0 @@
-import numpy as np
-from PySide2 import QtCore
-from PySide2.QtCore import Qt
-
-
-class DataModel(QtCore.QAbstractTableModel):
-    def __init__(self, data=np.array([[]], dtype=np.float32)):
-        super().__init__()
-
-        self._data = data
-
-    def updateAllData(self, data):
-        self.layoutAboutToBeChanged.emit()
-        self._data = data
-        self.layoutChanged.emit()
-
-    def rowCount(self, index):
-        return self._data.shape[0]
-
-    def columnCount(self, index):
-        return self._data.shape[1]
-
-    def headerData(self, section: int, orientation: Qt.Orientation, role: int = ...):
-        if role == Qt.DisplayRole:
-            # if orientation == Qt.Orientation.Horizontal:
-
-                if section == 0:
-                    return 'Y'
-
-                return f'X{section}'
-
-        return None
-
-    def flags(self, index):
-        return Qt.ItemIsSelectable | Qt.ItemIsEnabled | Qt.ItemIsEditable
-
-    def setData(self, index, value, role):
-        if role == Qt.EditRole:
-            try:
-                value = float(value)
-            except ValueError:
-                return False
-            self._data[index.row(), index.column()] = value
-            return True
-        return False
-
-    def getData(self):
-        return self._data
-
-    def getY(self):
-        return self._data[:, 0]
-
-
-    def data(self, index, role):
-        if role == Qt.DisplayRole or role == Qt.EditRole:
-            # ?
-            return float(self._data[index.row(), index.column()])
-
-        return None
\ No newline at end of file
diff --git a/statapp/models/editable_table_model.py b/statapp/models/editable_table_model.py
new file mode 100644
index 0000000..e2328e6
--- /dev/null
+++ b/statapp/models/editable_table_model.py
@@ -0,0 +1,30 @@
+import numpy as np
+from PySide2.QtCore import Qt
+
+from statapp.models.ro_table_model import ROTableModel
+
+
+class EditableTableModel(ROTableModel):
+    def __init__(self, data=np.array([[]], dtype=np.float32)):
+        super().__init__()
+
+        self._data = data
+
+    def flags(self, index):
+        return Qt.ItemIsSelectable | Qt.ItemIsEnabled | Qt.ItemIsEditable
+
+    def setData(self, index, value, role):
+        if role == Qt.EditRole:
+            try:
+                value = float(value)
+            except ValueError:
+                return False
+            self._data[index.row(), index.column()] = value
+            return True
+        return False
+
+    def data(self, index, role):
+        if role == Qt.DisplayRole or role == Qt.EditRole:
+            return float(self._data[index.row(), index.column()])
+
+        return None
diff --git a/statapp/models/input_values_model.py b/statapp/models/input_values_model.py
new file mode 100644
index 0000000..6f5629c
--- /dev/null
+++ b/statapp/models/input_values_model.py
@@ -0,0 +1,16 @@
+import numpy as np
+from PySide2.QtCore import Qt, QModelIndex
+
+from statapp.models.editable_table_model import EditableTableModel
+from statapp.models.utils import yx_header
+
+
+class InputValuesModel(EditableTableModel):
+    def __init__(self, data=np.array([[]], dtype=np.float32)):
+        super().__init__(data)
+
+    def getHorizontalHeader(self):
+        return yx_header(self.rowCount(QModelIndex()))
+
+    def getY(self):
+        return self._data[:, 0]
diff --git a/statapp/models/ro_table_model.py b/statapp/models/ro_table_model.py
index cb67ee9..aad69aa 100644
--- a/statapp/models/ro_table_model.py
+++ b/statapp/models/ro_table_model.py
@@ -43,10 +43,6 @@ class ROTableModel(QtCore.QAbstractTableModel):
     def getData(self):
         return self._data
 
-    def getY(self):
-        return self._data[:, 0]
-
-
     def data(self, index, role):
         if role == Qt.DisplayRole:
             return float(self._data[index.row(), index.column()])
diff --git a/statapp/models/utils.py b/statapp/models/utils.py
new file mode 100644
index 0000000..6f8b3ba
--- /dev/null
+++ b/statapp/models/utils.py
@@ -0,0 +1,2 @@
+def yx_header(count):
+    return ['Y'] + [f'X{i}' for i in range(1, count)]
diff --git a/statapp/models/variance_analysis_model.py b/statapp/models/variance_analysis_model.py
index 8a57895..fc37522 100644
--- a/statapp/models/variance_analysis_model.py
+++ b/statapp/models/variance_analysis_model.py
@@ -1,6 +1,7 @@
 from PySide2.QtCore import QModelIndex
 
 from statapp.models.ro_table_model import ROTableModel
+from statapp.models.utils import yx_header
 
 
 class VarianceAnalysisModel(ROTableModel):
@@ -11,4 +12,4 @@ class VarianceAnalysisModel(ROTableModel):
         return ['Мат. ожидание', 'Среднекв. отклонение', 'Минимум', 'Максимум']
 
     def getVerticalHeader(self):
-        return ['Y'] + [f'X{i}' for i in range(1, self.rowCount(QModelIndex()))]
+        return yx_header(self.rowCount(QModelIndex()))