Moving average, Holt-Winters, ARIMA and machine learning run on the same 104 weeks of demand. See which wins, where each breaks, and download the dataset.
October 1, 2026
How to run an ABC analysis step by step, add XYZ for demand variability, and turn the 9-cell matrix into service levels and forecast rules. 20-SKU example inside.
October 8, 2026
How to calculate forecast bias, read a tracking signal, and find where the lean comes from. Worked 12-week example plus a free calculator.
October 5, 2026
What the bullwhip effect is, how a 10% demand change turns into a factory-sized swing, real examples, and the forecasting fix that stops it at the source.
October 6, 2026
Most demand models track twenty variables. A handful do the work. What demand drivers actually are, how to find yours, and why adding more data stops helping.
What demand planning is, how the cycle runs month to month, and how teams reach a touchless forecast. The process, the four KPIs, and the accuracy bar to clear first.
The safety stock formula explained with 6 calculation methods run on one example, a Z-score service level table, and the forecast error lever most guides skip.
September 29, 2026
A step-by-step guide to the S&OP process: the 5 steps, the week-by-week monthly calendar, who owns what, and how to grade your own S&OP maturity.
Learn how to measure forecast accuracy with MAPE, WMAPE, bias and FVA. One worked example, four metrics, and the honest answer to what a good score looks like.
