Der ΔR²-Wert beim Hinzufügen des zweiten Blocks

You will mostly use this in a scientific or professional setting. You drop this phrase when you are presenting your thesis or a business report. It usually follows a verb like betragen (to amount to) or ausweisen (to show). You might say, 'Der Wert zeigt uns, ob das Modell besser wird.' It is a heavy noun phrase, typical of high-level German. You need to be comfortable with the word Hinzufügen. It sounds very formal, like you are carefully placing a puzzle piece. Use it to sound like a real expert in your field.

Use this during your Master's defense or a data review meeting. It is perfect for when you need to justify why you collected more data. If your boss asks why the second survey was necessary, point to this value. It is also common in research papers. If you are reading a German psychology or economics study, you will see this everywhere. It signals that you have done a rigorous, step-by-step analysis. It is the language of someone who respects the scientific method.

Do not use this at a bar or a first date. Unless your date is a statistician, they will think you are a robot. It is far too technical for casual conversation. Avoid using it if you only have one set of variables. There is no 'second block' if you only have one! Also, do not use it if you are just talking about general changes. Use simpler words like Verbesserung or Unterschied for everyday life. Keep this one in your professional toolbox for when precision is non-negotiable.

Germany has a deep-rooted love for 'Statistik' and 'Präzision'. This phrase reflects the 'Wissenschaftssprache' (academic language) used in German universities. German researchers prefer long, compound-heavy descriptions over short, vague ones. This specific phrasing comes from the tradition of hierarchical linear modeling. It is very common in social sciences in Germany. It shows the cultural value placed on methodical, step-by-step proof. In Germany, 'gut begründet' (well-founded) is one of the highest compliments for any argument.

You might hear die Änderung des Bestimmtheitsmaßes. This is the even more formal way to say it. Some people might say der R-Quadrat-Zuwachs. That is a bit shorter and punchier. In casual lab talk, you might just hear das Delta im zweiten Block. However, if you are writing, stick to the full version. Another variation is die Varianzaufklärung des zweiten Modells. All of these circle the same idea: did adding more stuff actually help us understand the world better?