Blogs

Analytics

Find out how analytics, from data mining to cognitive computing, is changing the way we do business

Lou FlynnApril 24, 2026 0

From Tools to Agents: How orchestrated decision intelligence is reshaping S&OP

Learn how supply chain management evolves from isolated tools to integrated agents that address the complexity and interdependence in S&OP.

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Manufacturing

Analytics | Data Visualization | Programming Tips

Rick WicklinApril 22, 2026 0

Visualize the placement of knots for regression splines

Splines are useful tools for fitting regression models to data. A spline replaces a single variable (call it X) with several other variables, which are a spline basis for X. When using a spline basis, the shape and location of the basis functions depend on the placement of knots. Knots

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Analytics | Learn SAS | Programming Tips

Rick WicklinApril 20, 2026 0

The sample median is a biased estimator for skewed distributions

Did you know that, for skewed distributions, the sample median is a biased estimator of the population median? You can show this in two ways. For any distribution, you can run a Monte Carlo simulation that reveals the bias. And, for some distributions (such as the exponential distribution), you can

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