Make Faster Decisions with Group Sequential Tests

ABsmartly’s proprietary Group Sequential Testing (GST) engine empowers companies to make faster data-driven decisions–up to 80% faster than conventional Fixed-Horizon A/B testing.

Better business results 

Group Sequential Tests stop tests earlier than equivalent fixed-horizon A/B tests, on average, while retaining statistical rigour. This results in direct business benefits by reducing exposure to harmful variants and through earlier shipping of beneficial changes. The business effect is proportional to how early a test stops, compared to a fixed-horizon equivalent.

That’s why the experimentation experts use it. Organizations prioritizing product-lead growth need a tool that helps them innovate faster and more efficiently. The added value and agility is too good to miss out on.  Experiment like the pros with Group Sequential Testing.

Best of both worlds

The Group Sequential approach is the middle ground between fixed-horizon tests and fully sequential tests like SPRT, mSPRT and variants of Always-Valid Inference.  GSTs offer the right level of speed, agility, and generalizability without incurring the significant loss of power typical for fully sequential tests. Group sequential tests are a best-of-both-worlds method which is ideally suited for product experimentation at scale.

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Written By

Erin Weigel

As an ABsmartly advisor and author of "Design for Impact: Your Guide to Designing Effective Product Experiments", Erin has been living and breathing experimentation for 15+ years.

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