data_dictionary_book_english

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…

bash_data_science_command_line

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!

Growing Up Data Tools - Chapter 5

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 that’s one of the most commonly used data languages. The popularity of…

Communicate the Data! - Chapter 3

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…

Communicate the Data! - Chapter 3

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….

Communicate the Data! - Chapter 3

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…

Communicate the Data! - Chapter 3

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…

Growing Up Data Tools - Chapter 5

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…

Startup Data Tools - Chapter 4

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…

Analyze the Data! - Chapter 2

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…

Analyze the Data! - Chapter 2

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…

Growing Up Data Tools - Chapter 5

SQL for Data Analysis – Tutorial for Beginners – ep5

Combining tables is a key component, when you are doing data analysis. And SQL is really good at it! Of course each case is different, but I’ve run…

Growing Up Data Tools - Chapter 5

SQL for Data Analysis – Tutorial for Beginners – ep4

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…

Growing Up Data Tools - Chapter 5

SQL for Data Analysis – Tutorial for Beginners – ep3

Today I’ll show you the most essential SQL functions, that you will use for finding the maximums or the minimums (MAX, MIN) in a data set and to…

Startup Data Tools - Chapter 4

How to Optimize Facebook Campaigns Based on Conversion Data

“How do I optimize Facebook campaigns?” This is the question that I hear all the time from clients to whom I teach Facebook marketing. Of course, it depends…

Growing Up Data Tools - Chapter 5

SQL for Data Analysis – Tutorial for Beginners – ep2

This is the second episode of my SQL for Data Analysis (for beginners) series and today I’ll show you every tiny little details of the SQL WHERE clause….

Growing Up Data Tools - Chapter 5

How to install SQL Workbench for postgreSQL

In my previous SQL for data analysis tutorial I’ve briefly mentioned, that I prefer SQL Workbench over pgadmin4 for SQL querying. Today I will show you, how you can install it…

Growing Up Data Tools - Chapter 5

SQL for Data Analysis – Tutorial for Beginners – ep1

SQL is a must, if you want to be a Data Analyst or a Data Scientist. I have worked with many online businesses in the last few years…

Get the Data - Chapter 1

The structure of your Data Team. The flow of the data in your organization.

Smaller companies have smaller data teams (maybe just one person), bigger companies have bigger. The tricky thing is that the several aspects of a data project need several…

Analyze the Data! - Chapter 2

Usability testing (for Data Analysts)

Usability testing is a widely used research method to collect detailed and direct qualitative user feedback about your product (or website, mobile application, anything…) What is it exactly…