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…
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…
Working with current dates and times in data science projects is quite common. In this episode of my SQL tutorial series I’ll show you the best functions that…
In this episode of the SQL tutorial series you’ll learn two simple but important commands that you’ll use frequently when working in SQL: TRUNCATE TABLE and DROP TABLE….
In my previous article about statistical averages, we discussed how you can describe your dataset with a few central values (mean, median and mode). That’s well and good……
I always say that learning linear regression in Python is the best first step towards machine learning. Linear regression is simple and easy to understand even if you…
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…
In my previous landing page A/B test case study, I promised to get back to you with a few A/B testing misconceptions. In this article, I’ll share three…
Data Science is trending! Year by year more and more online businesses start their first data science projects, build up their data teams, hire more data scientists and…
Doing Data Science without a sense of business is like playing chess without the kings on the board. For every business, making its products or services better is…
This is a guest post from Ben Collins – freelance data analyst and developer, and founder of The Collins School of Data. What is Google Data Studio? Data…