Whats the minimum sample size required to get an accurate understanding of my installed base?
Approximately 900 to 1000 users will provide a statistically valid sample of the core psychometric information through the dialogue collection mechanism. This sample is used by Xamplify’s extrapolation algorithms to build models for the entire customer-base of a client. For a company like Charles Schwab, this sampling size would be approximately 0.02% of their customers. The extrapolation algorithms rely on a 3-stage association/correlation technology that is well established and used in other disciplines in the US (e.g., presidential election predictions-notwithstanding the most recent one). These techniques were architected and audited by our Chief Statistician (and Stanford University Professor), Dr. Dave Donoho.
