YouTube
Education
Business Analyst Channel
Tutorial videos in Portuguese-🇧🇷 teaching practical business analysis for beginners and experienced practitioners looking to up their game.
Statistics
Web Tool
Sample Size Calculator
Online calculator for determining minimum required sample sizes for statistical significance, guiding users with clear, structured interpretation phrases to help them find the correct approach.
JavaScript
Machine Learning
Easy CHAID
Web application for generating classification trees using the Chi-squared Automatic Interaction Detection Algorithm (CHAID) in pure client-side JS.
Data Join
Cheat Sheet
Table Join Cheat Sheet
Quick reference guide for SQL, Spark, and Pandas table join syntax, conditions, and relational logic to keep handy near your workstation.
A/B Testing
Comparison
Stat. Sig. Calculators Comparison
Comprehensive matrix comparing popular online calculators for sample size, statistical significance, and confidence intervals.
About Me
Passionate about programming, data science, economics and business. A
fan of LEGO and a Trekkie 🖖. Recently picked up electronics as a
hobby.
M.Sc. in Economics and Finance from Insper, Bachelor of Business
Administration from FEA-USP, and certified Data Scientist.
I've worked for large financial institutions for 20 and now I'm enjoying a temporary sabbatical (as of 2026).