Maintain an unchanged version in experiments to isolate the impact of your changes and prove causation rather than correlation with external factors.

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Definition

Control group

Maintain an unchanged version in experiments to isolate the impact of your changes and prove causation rather than correlation with external factors.

Why this matters

Example 1

Example 2

Example 3

How to apply

Control group

Key concepts and frameworks explained clearly. Quick reference when you need to understand a term, refresh your knowledge, or share with your team.

Playbooks

Read more in the growth playbook

Playbook

Experimentation

Random experiments waste time and budget. A structured framework ensures every test teaches you something, even when it fails. Decide what to test, design experiments properly, analyse results accurately, and share learnings so the whole team gets smarter.

See playbook
Experimentation