Marcel Wiechmann

Marcel brings extensive expertise in statistical analysis and a strong background in empirical research to the field of data analytics. With a PhD in Psychology and nearly a decade of experience in academic research and statistical consulting, he has developed a particular talent for making complex analytical concepts accessible to diverse audiences.

His professional journey spans from training junior researchers and research groups in advanced statistical methods to supporting businesses in deriving actionable insights from their data. This unique combination of academic rigor and practical application allows him to approach data challenges from multiple angles, always focusing on clear communication and practical value.

At The Information Lab, he combines his analytical mindset with his passion for explaining complex relationships in an understandable way. His experience with various analytical methods and tools enables him to identify key patterns in data and translate them into clear, actionable insights.

Technical Skills

Data Analysis: SPSS, Python, R

Data Preparation: SQL, Python

Key Competencies

Data Storytelling

Effective Communication

Training & Coaching

Project Management

Statistical Analysis & Research Methods

Certifications

Blog Posts

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Wed 22 Jan 2025 | Marcel Wiechmann
Power BI Data Models: The Basics You Need to Know
Creating impactful reports in Power BI requires a solid foundation: your data model. Sure, Power BI allows you start visualizing as soon as you connect your data. But taking the time to understand and structure your data model will make your analyses both more powerful and easier to maintain
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Mon 20 Jan 2025 | Marcel Wiechmann
Countdown zur Projektphase
Kundenprojekte sind ein Kernbestandteil der Data School Ausbildung
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Mon 20 Jan 2025 | Marcel Wiechmann
Marvel an der Kinokasse: Ein Dashboard-Makeover
Makeover Monday ist eine wöchentliche Datenviz-Challenge, bei der die Community bestehende Visualisierungen neu interpretiert und verbessert. Mehr Details zur Initiative findet ihr in Olivias Blog-Post zu Makeover Monday
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Mon 13 Jan 2025 | Marcel Wiechmann
Using AI as Your Personal SQL Mentor
Developing strong SQL skills is one of the essential parts of the training as a Data School Consultant. Our SQL training combined classic lectures and demonstrations with hands-on exercises like the SQL Murder Mystery
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Wed 08 Jan 2025 | Marcel Wiechmann
Start With The Why (Part 2): User Story First, Data Second
In Part 1, we explored how Karl Popper's insight about the need for guided observation resonates deeply with modern analytics
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Fri 03 Jan 2025 | Marcel Wiechmann
Start With The Why (Part 1): When Philosophy Meets Analytics
Picture this: First day of lectures at the London School of Economics, sometime in the 1950s. Karl Popper, one of the most influential philosophers of science of the 20th century, enters the room
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Fri 27 Dec 2024 | Marcel Wiechmann
Das Simpson-Paradox: Wann uns Durchschnittswerte in die Irre führen können
Bei der Analyse von Geschäftsdaten verlassen wir uns häufig auf Durchschnittswerte und aggregierte KPIs. Sie geben uns einen schnellen Überblick und helfen, Entscheidungen zu treffen
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Wed 18 Dec 2024 | Marcel Wiechmann
How to Create Dumbbell Charts in Tableau: A Step-by-Step Guide
Ever needed to compare two states or points in time across multiple categories? While bar charts might be your go-to solution, dumbbell charts (also known as DNA charts or barbell charts) often provide a cleaner and more elegant alternative
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Wed 18 Dec 2024 | Marcel Wiechmann
Eine Woche Data School - Erste Eindrücke
Als statistischer Berater, der bisher hauptsächlich akademische Kunden und kleinere Unternehmen betreut hat, war ich gespannt darauf, wie sich die Data School von meinen bisherigen Erfahrungen unterscheiden würde. Was sofort auffällt, ist die außergewöhnlich positive Atmosphäre im Büro
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