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Welcome to Data Analyst BI

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!

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Executive summary NVIDIA is analyzed here using the full fundamental framework: balance sheet, income statement, cash flow statement, valuation mul…
Cities and towns across Europe are changing in subtle but unmistakable ways. Cafés fill at midday with laptops, landlords convert long-term flats i…
Geometry of Price, Probabilistic Zones, and Strategic Forecasting Fibonacci theory has transcended its mathematical origins to become a foundationa…
In the ever-evolving world of portfolio management, the classic Mean-Variance Optimization (MVO) model developed by Harry Markowitz laid the foun…
Quality Assurance is no longer an afterthought. As software becomes distributed, AI-infused, and mission-critical, QA testers are evolving into Quali…
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