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statistics in data science and analytics

Statistical Bias Types explained – part 2 (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) – 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…

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…

thoughts about data science and analytics

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…

coding in data science and analytics

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…

coding in data science and analytics

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…

coding in data science and analytics

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…

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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…

coding in data science and analytics

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 detail of the SQL WHERE clause….

coding in data science and analytics

How to install SQL Workbench for postgreSQL

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

coding in data science and analytics

SQL for Data Analysis – Tutorial for Beginners – ep1

SQL (Structured Query Language) is a must if you want to be a Data Analyst or a Data Scientist. I have worked with many online businesses in the…

Strategy and Business in Data Science and Analytics

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 different aspects of a data project need…

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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…

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…

coding in data science and analytics

Data Coding 101 – Intro to Bash – ep6 (last episode)

This is the last piece of my “Data Coding 101: Introduction to Bash” series, where I introduce the very basics of how to use the command line for…

coding in data science and analytics

Data Coding 101 – Intro To Bash – ep5

In this article I will show you 3 data coding concepts, that won’t only be useful in bash, but Python and R as well! Today we will go…

coding in data science and analytics

Data Coding 101 – Intro To Bash – ep4 (with video)

Data Coding in Bash – this is episode 4! Let’s continue with some basic bash best practices. Today I’ll show you 9 tips, that will make your data coding…

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