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This paper describes how to develop the technical components necessary to calculate Population Stability Index (PSI), implement PSI into a SAS Enterprise Miner extension node, and interpret the results of applied PSI analytics as an industry solution "Best Practice". As companies continue to amass large amounts of data and use it to develop statistical models, the PSI measure helps monitor data and scorecard integrity. This is especially important since statistical models are being used to make strategic decisions worth millions of dollars.
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