Learn SQL for Data Analysis – from scratch

Learning SQL is very useful for anyone in the online world. And it’s a definite must for Data Analysts/Scientists! Here are 8 articles to start with…

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Learn Python 3 for Data Science – from scratch

I put together a ‘Python 3 for Data Science’ tutorial series starting from the very basics. It features 9 practical articles – that covers everything you need to know!

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Learn Data Analytics in Bash – from scratch

Read these 7 free articles about Bash/Command Line and take your very first step to learn the basics of coding for Data Science!

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Practical Data Dictionary

I decided to create a dictionary which unifies the most used data expressions and places them within a clear framework. This is an 54 pages handbook and actually it’s…

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Why Become a Data Scientist? (7+1 Selfish Reasons)

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…

statistics in data science and analytics

Statistical Averages – Mean, Median and Mode

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…

coding in data science and analytics

Python For Loops Explained (Python for Data Science Basics #5)

Remember, that I told last time that Python if statements are similar to how our brain processes conditions in our everyday life? That’s true for for loops too….

coding in data science and analytics

Python If Statements Explained (Python for Data Science Basics #4)

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…

coding in data science and analytics

Python Built-in Functions and Methods (Python for Data Science Basics #3)

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…

coding in data science and analytics

Python 2 vs Python 3

“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….

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Data Analytics Basics (introduction)

You might have heard, that Data Scientist ranked as the best job of 2017 in the USA (based on Glassdoor’s research). Recently many IT professionals started considering to…

coding in data science and analytics

Python Data Structures (Python for Data Science Basics #2)

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…

coding in data science and analytics

Python for Data Science – Tutorial for Beginners #1 – Python Basics

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…

statistics in data science and analytics

How not to be biased?

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…

statistics in data science and analytics

Statistical Bias Types explained – part2 (with examples)

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….

statistics in data science and analytics

Statistical Bias Types explained (with examples) – part1

Humans are stupid. We all are, because our brain has been made that way. The most obvious evidence to this built-in stupidity is the different biases, that our…

Strategy and Business in Data Science and Analytics

Data visualisation and discovery with Tableau

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…

coding in data science and analytics

SQL for Data Analysis – Tutorial – ep6 (advanced stuff)

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…

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How to Create UTM Codes and Track Your URLs

Wouldn’t it be good to know where most of your traffic is coming from? What about email sign ups or even revenue broken down by social channels? How…

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Data Science Fundamentals for Marketing and Business Professionals (video course demo)

This is kind of a special blogpost, because here I share 3 videos from my brand new O’Reilly Video course – called Data Science Fundamentals for Marketing and Business…

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Website Heatmaps – Tools, Features & Best Practices

Heatmapping is a simple and efficient way to analyze visitor interaction and user behavior on your website. If you are in a Conversion Rate Optimization (aka. CRO) project…