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Reference.org
Test and learn
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<p>Test and learn is a set of practices followed by retailers, banks and other consumer-focused companies to test ideas in a small number of locations or customers to predict impact. The process is often designed to answer three questions about any tested program before rollout: </p> <ol><li>What impact will the program have on key performance indicators if executed across the network or customer base?</li> <li>Will the program have a larger impact on some stores/customers than others?</li> <li>Which components of the idea are actually working?</li></ol>