Tag: data science Page 1 of 3

thoughts about data science and analytics

Is R Required for Data Science? (my opinion)

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…

thoughts about data science and analytics

What Machine Learning Algorithms Should You Learn First? (with examples)

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….

thoughts about data science and analytics

The Most Important Soft Skills for a Data Scientist

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…

thoughts about data science and analytics

Domain Knowledge in a Specific Field: Is it Important for a Data Scientist?

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…

thoughts about data science and analytics

BIG DATA: Should you learn about it to get a junior data scientist position?

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…

thoughts about data science and analytics

What Does a Data Scientist’s Day Look Like?

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…

statistics in data science and analytics

Expected Value (Formula, Explanation, Everyday Usage and a Game)

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…

coding in data science and analytics

Data Science Hobby Project Example: Twitter Data Analysis With JavaScript

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…

thoughts about data science and analytics

Data Science & Freelancing – an Honest Opinion (with Concrete Tips)

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?…

coding in data science and analytics

Pandas tutorial 5: Scatter plot with pandas and matplotlib

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…

thoughts about data science and analytics

My Computer Setup for Data Science (Apps, Software, Programs and Tools I Use)

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…

thoughts about data science and analytics

What is Data Science?

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…

coding in data science and analytics

Scraping Multiple Web Pages with For Loops (in bash) — Web Scraping Tutorial ep#2

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…

coding in data science and analytics

Web Scraping Tutorial — episode #1 — Scraping a Webpage (with Bash)

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…

thoughts about data science and analytics

What’s the best computer/laptop for a data scientist?

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…

thoughts about data science and analytics

Data Science Projects for Boosting Your Resume

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…

thoughts about data science and analytics

Presentation Tips for Data Professionals

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…

thoughts about data science and analytics

How to be a more productive Data Scientist? Don’t do more, do it smarter!

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…

coding in data science and analytics

SQL Interview Questions: 3 Tech Screening Exercises (For Data Analysts)

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…

coding in data science and analytics

Pandas Tutorial 3: Important Data Formatting Methods (merge, sort, reset_index, fillna)

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…