Jun 4Linear Regression: Multicolinearity, they taught you wrongA FAMOUS MISCONCEPTION Do you understand what multicollinearity is? To clarify, do you truly grasp the concept of multicollinearity and how to detect it? If your answer involves recognizing multicollinearity as a high correlation among independent variables in a regression model, detected by examining the correlation matrix, then your understanding is only partially…Linear Regression4 min readLinear Regression4 min read
Apr 12Pricing with Machine LearningDATA-DRIVEN PRICING I’ve had the opportunity to work with Credit, Collection, and Pricing. Among these areas, I found that Pricing seems to have the least amount of sources that leverage data-driven strategies. …Machine Learning7 min readMachine Learning7 min read
Oct 13, 2022To all my Data Scientists fellows: Stop using so many jargons!Don’t be a data scientist/analyst that only uses jargon and/or terms that are incomprehensible to most people. You don’t appear to be smarter because of that. …Data Science2 min readData Science2 min read
Aug 27, 2022Denialism and data careers do not mixLately, I’ve been trying to convince people who follow my Instagram account — Universidade dos Dados (Portuguese translation for Data University) — the importance of trusting science and data more than their opinions. I now share with my followers many scientific articles from good journals with conclusions that are often…Data Science2 min readData Science2 min read
Aug 3, 2022Become a Data Scientist/Analyst spending no money at all!TOO MANY OPTIONS Nowadays, there are many online courses for those wanting to work with data. Since the data market is booming, schools are taking advantage of people willing to be part of this. Many people spend hundreds, or even thousands, of dollars with specializations, MBAs and so on. I understand them, there…Data Science3 min readData Science3 min read
Jul 25, 2022A few things no course will teach you about Data ScienceThere are many jobs in the field, but there are also many applicants and recruitment is a game with huge asymmetric information. Be patient, the opportunity will arise, but it will take longer than you thought. If you are curious and love to learn, you should know that you will…Data Science3 min readData Science3 min read
Jul 13, 2022The biggest challenge faced by those coming to work with dataI’m a mathematician with a master degree in economics. Imagine the following situation, I decide out of nowhere to become a neurosurgeon. In this fake scenario, this type of doctor don’t need a degree to work — let’s believe this is real just for the sake of the story. I…Data Science3 min readData Science3 min read
Jun 15, 2022Get recruiters to call you with these 3 simple tips!WHY CAN’T YOU FIND A JOB? As a Data Science mentor, I’ve always dealt with beginners having trouble in finding their first job. Even though we have a booming job market with so many positions for data professionals, these people keep complaining that they can’t even get to an interview. For those more experienced, this is…Job Search5 min readJob Search5 min read
Jun 12, 2022Multicollinearity is not correlationIntroduction: The problem with tutorials This huge amount of data science tutorials on the internet has its pros and cons. The biggest problem, in my humble opinion, is that everyone wants to talk about data nowadays in order to get people — specially recruiters — attention. That being said, several mistakes are being made and…Data Science3 min readData Science3 min read
Sep 6, 2021Helping other data scientists leads to LESS competition, not MORE!People are afraid of competition. This is normal, it's a matter of survival. By adding the famous quote "information is power" to the equation, sharing information can seem risky. …Data Science2 min readData Science2 min read
