# Christos Karadis

Athens, Greece | xristoskaradis40@gmail.com
GitHub: https://github.com/xristoskaradis40-lab/ata-science-portfolio
Portfolio: https://xristoskaradis40-lab.github.io/ata-science-portfolio/

## Target Role
Junior Data Analyst (Entry Level)

## Education
Evening Gymnasium

## Skills
- Excel (basic)
- Word (basic)
- Internet research
- Python (basic)

## Projects
**Titanic Survival Classification**
- Binary classification using demographic and ticketing features
- Model: XGBoost, Accuracy 79.21%

**House Prices Regression**
- Predicting sale prices from structural features and engineered signals
- Model: Tuned XGBoost, R2 0.8989

**Customer Churn Classification**
- Churn prediction with ROI analysis for retention strategy
- Model: Random Forest, ROC-AUC 92.5%