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: learn data science Page 1 of 2
Did you flirt with the idea of learning data science? You are not alone. This has been a really hot topic in the last few years and it…
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…
Let’s continue with the pandas tutorial series. This is the second episode, where I’ll introduce aggregation (such as min, max, sum, count, etc.) and grouping. Both are very…
Pandas is one of the most popular Python libraries for Data Science and Analytics. I like to say it’s the “SQL of Python.” Why? Because pandas helps you…
Did you know that Python wasn’t originally built for Data Science? And yet today it’s one of the best languages for statistics, machine learning, and predictive analytics as…
So far we have worked with the most essential concepts of Python: variables, data structures, built-in functions and methods, for loops, and if statements. These are all parts…
In my Python workshops and online courses I see that one of the trickiest things for newcomers is the syntax itself. It’s very strict and many things might…
Last time I wrote about Python For Loops and If Statements. Today we will talk about how to combine them. In this article, I’ll show you – through a…
Connecting Google Data Studio to your PostgreSQL database is easier than you would think. I will walk you through the whole process step by step. By the end…
Following the previous article about creating data tables in SQL, now we want to load data into our freshly created SQL table. In this article, I’ll show you…
Last time I wrote about why it’s worth it to become a data scientist. This time I’d like to answer another important and very common data science career…
Why become a data scientist? From time to time, I get this question from people who are flirting with the idea of becoming a data professional. Since you…
As I have mentioned several times, Data Science has 3 important pillars: Coding, Statistics and Business. To succeed, you have to be well-versed in all three. In this…
We use if statements in our everyday life all the time – even if our everyday life is not written in Python. If the light is green then…
It’s fair to say that using functions is the biggest advantage of Python. Or at least you will use them a lot during your Data Science projects! This…
“Should I learn Python 2 or Python 3?” For everyone who has just started to learn Python for Data Science, this is an important initial question to answer….
You might have heard that Data Scientist was ranked as the best job of 2017 in the USA (based on Glassdoor’s research). Recently many IT professionals have started…
Where we did we leave off? Oh, right, we learned about how to use variables in Python. Here is the second essential topic that you have to learn…