Hey, I'm Tomi Mester. This is my data blog, where I give you a sneak peek into online data analysts' best practices. You will find articles and videos about data analysis, AB-testing, research, data science and more…Tag: data science Page 1 of 3
There are three popular languages for data scientists: SQL, Python and R. I create a lot of tutorials about SQL and Python on my blog… But I never…
I get way too many questions from aspiring data scientists regarding machine learning. Like what parts of machine learning they should learn more about to get a job….
I’ve talked a lot already about the three primary skills you need to know for data science: coding, statistics and business thinking… But it’s worth listing those secondary…
Is it important for data scientists to have domain knowledge in a specific field? In this article, I’ll answer this question. As you might have heard from me…
A question that I get often is this: “Should an aspiring data scientist learn more about big data (e.g. Apache Hadoop or Spark) to get a job?” I’ll…
In this article, I’ll answer a frequently asked question – which is: “What does a data scientist’s day look like?” This article is available in video and podcast…
Why are people losing at the casinos? Why shouldn’t you buy a lottery ticket? How do you account for uncertainty when you invest a smaller or bigger amount…
Tomi Gelo was one of the first participants in my 6-week data science course (the Junior Data Scientist’s First Month). Since then, he has done some pretty cool…
One of the most common questions I get from aspiring/junior data scientists is this: Is it possible to get freelance gigs and jobs as a junior data scientist?…
Scatter plots are frequently used in data science and machine learning projects. In this pandas tutorial, I’ll show you two simple methods to plot one. Both solutions will…
Recently, I had the “pleasure” of setting up my work computer (the computer that I use exclusively for data science projects) from scratch. I have a 2016 Macbook…
In this article I’ll answer a very simple question: What is data science? Well, the question is simple, sure… But the answer is rather complex. The problem is…
This is the second episode of my web scraping tutorial series. In the first episode, I showed you how you can get and clean the data from one…
Running hobby projects is the best way to practice data science before getting your first job. And one of the best ways to get real data for a…
I get this question a lot: What’s the best computer (or laptop) for a data scientist? In this article, I’ll answer it in detail and I’ll add specific…
We all know the old catch-22 — you need a job to get job experience and job experience to get a job. Luckily, that’s not entirely true in…
Not so long ago, I saw one of my data scientist friends speak in front of his whole company. He worked for two months on a great data…
A few years ago, I put a lot of work into a hobby project of mine: a self-learning Python chatbot that learns like a newborn baby. It was…
Over the last 6 years I’ve been part of many job interviews – on both sides of the table. The most fun, but also the most feared, part…
This is the third episode of my pandas tutorial series. In this one I’ll show you four data formatting methods that you might use a lot in data…