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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!

Welcome back to the blog! Today, we’re diving into the life and legacy of Adam Smith , often called the father of modern economics . His ideas laid…
Schrödinger’s Cat, Quantum Superposition, and the Measurement Problem 1. A Thought-Experiment with Nine Lives In 1935, Austrian physicist Erwin Schr…
The Twin Paradox and the Relativity of Time in Einstein’s Universe 1. Boarding Pass to the Future Meet the twins: Luna and Sol. Sol rockets off at 0…
Russell’s Barber Paradox and the Nightmare of Self-Reference 1. The Village Rule That Implodes Imagine a one-street town with exactly one barber. …
Welcome back to the blog! Today, we’re diving into one of the most mind-bending thought experiments in decision theory: Newcomb’s Paradox . This p…
Why Zeno’s “Achilles vs. Turtle” Paradox Still Messes With Our Sense of Motion 1. Set the Scene Picture a dusty stadium in ancient Greece. Achilles…
“All Cretans are liars,” said the Cretan Epimenides.  “This sentence is false,” echoes every logic textbook.  We’re still arguing 2,600 years later—…
Welcome back to the blog! Today, we’re exploring one of the most iconic and thought-provoking problems in game theory: the Prisoner’s Dilemma . Th…
In today’s data-driven world, Power BI has become one of the most powerful tools for data analysts and business intelligence professionals. Here are …
Welcome back to the blog! Today, we're diving into one of the most famous and counterintuitive puzzles in probability theory: the Monty Hall Par…
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