Big Data and AI

Data Analyst BI is a blog dedicated to data analysis, Business Intelligence, and economic research. Here you will find practical guides and tutorials on Excel, Power BI, and SQL, together with insights on financial models, portfolio analysis, and best practices for turning raw data into meaningful insights. The goal is to support professionals, students, and enthusiasts in improving analytical skills, building models, and making smarter, data‑driven decisions. Each week I share tips, real‑world examples, and strategies to help you grow in Data Science, BI, and economic analysis. If you are passionate about transforming data into knowledge, you are in the right place!