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
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. At least you will use them a lot during your Data Science projects! This is…
“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 left off? Oh, right, we learned about how to use variables in Python. Here is the second essential topic, that you have to learn, if you…
If you are learning Data Science, pretty soon you will meet Python. Why is that? Because it’s one of the most commonly used data languages. It’s popular for…
In the last 2 weeks I’ve introduced 9 common statistical bias types. If you went through them, you have already done the first very important step to overcome…
It’s time to continue our discourse about Statistical Bias Types. This is part 2 – if you missed part 1, read it here: Statistical Bias Types part 1….
Humans are stupid. We all are, because our brain has been made that way. The most obvious evidence of this built-in stupidity is the different biases that our…
The usefulness of visualisations in data analysis is often questioned. At the end of the day, the outcome of the analysis should be quantifiable, right? Well, maybe. But…
This is the final episode of the SQL for Data Analysis – Tutorial for Beginners series. Today I’ll show you some more advanced SQL moves! Though junior data…
You have already learnt a lot about the basics of SQL for data analysis. I figured, it would be nice to have now an episode focusing only on…