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Casandra Campbell

Casandra Campbell's articles
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How to run multiple experiments at once and keep results trustworthy
Experiments

How to run multiple experiments at once and keep results trustworthy

Casandra Campbell
October 1, 2026
How to Build a Culture of Experimentation
Experiments

How to Build a Culture of Experimentation

Casandra Campbell
September 18, 2026
How to Scale Your Experimentation Program
Experiments
Guides

How to Scale Your Experimentation Program

Casandra Campbell
September 1, 2026
Designing experiments that produce trustworthy results: a pre-launch guide to validity threats
Experiments
Guides

Designing experiments that produce trustworthy results: a pre-launch guide to validity threats

Casandra Campbell
August 24, 2026
Sample ratio mismatch (SRM): how to identify the root cause and decide whether to restart your experiment
Experiments
Analytics

Sample ratio mismatch (SRM): how to identify the root cause and decide whether to restart your experiment

Casandra Campbell
August 7, 2026
Variance reduction in A/B testing: 5 techniques to increase experiment sensitivity
Experiments
Data Science

Variance reduction in A/B testing: 5 techniques to increase experiment sensitivity

Casandra Campbell
July 30, 2026
How to avoid false positives in high-velocity experimentation
Experiments
Featured

How to avoid false positives in high-velocity experimentation

Casandra Campbell
July 10, 2026

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Why GrowthBook’s MCP server is just the interface
Beyond evals: A/B test AI features with LLM traces and business metrics
How to run multiple experiments at once and keep results trustworthy
How Grubhub tests big product bets before they ship
B2B product discovery: what MilliporeSigma learned rebuilding on-site search
ServiceNow's Customer Zero approach to AI experimentation
PayPal's $180 million experimentation win
Why Twilio ships on signals instead of significance
GoPro's case for treating losing tests as jet fuel