There Are times when engineered standard production rates are no longer accurate. Examples I've come across include: 1. The initial model is based on one product or product line, and isn't valid for all applications. 2. The initial model is based on limited sampling, resulting in many outliers. 3. A simple linear equation is used instead of a more complex model. 4. There is no model. It's a combination of best guess and historical data. For this column, I used regression analysis and design of experiments (DoE) to create a model for predicting production rates in a paper stock cutting facility.
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