diff --git a/lab_3/.gitignore b/lab_3/.gitignore
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index 0000000..4969c05
--- /dev/null
+++ b/lab_3/.gitignore
@@ -0,0 +1,11 @@
+__pycache__/
+*.pyc
+venv/
+.idea/
+.vscode/
+.DS_Store
+build/
+bin/
+*.log
+*.data
+.ipynb_checkpoints/
\ No newline at end of file
diff --git a/lab_3/README.md b/lab_3/README.md
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+++ b/lab_3/README.md
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+# Лабораторна робота №3 — Візуалізація даних
+
+## Датасет
+Heart Disease UCI
+https://archive.ics.uci.edu/dataset/45/heart+disease
+
+Завантажити файл `processed.cleveland.data` і покласти в папку `lab_3/`
+
+## Запуск
+```bash
+pip install -r requirements.txt
+jupyter notebook lab3.ipynb
+```
+
+## Вимоги
+- Python 3.8+
+- Jupyter Notebook
\ No newline at end of file
diff --git a/lab_3/lab3.ipynb b/lab_3/lab3.ipynb
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+++ b/lab_3/lab3.ipynb
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+{
+ "cells": [
+ {
+ "cell_type": "markdown",
+ "id": "bff65769-7d17-4f54-9426-39fd4f853f34",
+ "metadata": {},
+ "source": [
+ "# Лабораторна робота №3\n",
+ "# Візуалізація даних\n",
+ "## Датасет: Heart Disease UCI"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 7,
+ "id": "f8e99c73-a3ed-4503-bb8c-7afa1988ebfe",
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "import pandas as pd\n",
+ "import matplotlib.pyplot as plt\n",
+ "import seaborn as sns"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 9,
+ "id": "9803efd9-1fac-4293-91c4-ea045a53794c",
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "# Завантаження датасету\n",
+ "columns = ['age', 'sex', 'cp', 'trestbps', 'chol', 'fbs', \n",
+ " 'restecg', 'thalach', 'exang', 'oldpeak', \n",
+ " 'slope', 'ca', 'thal', 'target']\n",
+ "\n",
+ "df = pd.read_csv('processed.cleveland.data', names=columns, na_values='?')"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 10,
+ "id": "64474d2f-caf0-4d2b-b5a4-0a415bd227c7",
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Розмір після очищення: (297, 14)\n"
+ ]
+ },
+ {
+ "data": {
+ "text/html": [
+ "\n",
+ "\n",
+ "
\n",
+ " \n",
+ " \n",
+ " | \n",
+ " age | \n",
+ " sex | \n",
+ " cp | \n",
+ " trestbps | \n",
+ " chol | \n",
+ " fbs | \n",
+ " restecg | \n",
+ " thalach | \n",
+ " exang | \n",
+ " oldpeak | \n",
+ " slope | \n",
+ " ca | \n",
+ " thal | \n",
+ " target | \n",
+ "
\n",
+ " \n",
+ " \n",
+ " \n",
+ " | 0 | \n",
+ " 63.0 | \n",
+ " Male | \n",
+ " 1.0 | \n",
+ " 145.0 | \n",
+ " 233.0 | \n",
+ " 1.0 | \n",
+ " 2.0 | \n",
+ " 150.0 | \n",
+ " 0.0 | \n",
+ " 2.3 | \n",
+ " 3.0 | \n",
+ " 0.0 | \n",
+ " 6.0 | \n",
+ " 0 | \n",
+ "
\n",
+ " \n",
+ " | 1 | \n",
+ " 67.0 | \n",
+ " Male | \n",
+ " 4.0 | \n",
+ " 160.0 | \n",
+ " 286.0 | \n",
+ " 0.0 | \n",
+ " 2.0 | \n",
+ " 108.0 | \n",
+ " 1.0 | \n",
+ " 1.5 | \n",
+ " 2.0 | \n",
+ " 3.0 | \n",
+ " 3.0 | \n",
+ " 1 | \n",
+ "
\n",
+ " \n",
+ " | 2 | \n",
+ " 67.0 | \n",
+ " Male | \n",
+ " 4.0 | \n",
+ " 120.0 | \n",
+ " 229.0 | \n",
+ " 0.0 | \n",
+ " 2.0 | \n",
+ " 129.0 | \n",
+ " 1.0 | \n",
+ " 2.6 | \n",
+ " 2.0 | \n",
+ " 2.0 | \n",
+ " 7.0 | \n",
+ " 1 | \n",
+ "
\n",
+ " \n",
+ " | 3 | \n",
+ " 37.0 | \n",
+ " Male | \n",
+ " 3.0 | \n",
+ " 130.0 | \n",
+ " 250.0 | \n",
+ " 0.0 | \n",
+ " 0.0 | \n",
+ " 187.0 | \n",
+ " 0.0 | \n",
+ " 3.5 | \n",
+ " 3.0 | \n",
+ " 0.0 | \n",
+ " 3.0 | \n",
+ " 0 | \n",
+ "
\n",
+ " \n",
+ " | 4 | \n",
+ " 41.0 | \n",
+ " Female | \n",
+ " 2.0 | \n",
+ " 130.0 | \n",
+ " 204.0 | \n",
+ " 0.0 | \n",
+ " 2.0 | \n",
+ " 172.0 | \n",
+ " 0.0 | \n",
+ " 1.4 | \n",
+ " 1.0 | \n",
+ " 0.0 | \n",
+ " 3.0 | \n",
+ " 0 | \n",
+ "
\n",
+ " \n",
+ "
\n",
+ "