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Free white paper · Masterclass

The Accuracy Trap

Why chasing forecast accuracy is the wrong goal — and what to measure instead.

“Improve forecast accuracy” is the target almost every planning team agrees on, and almost no one questions. But accuracy is a means, not an end — and past a point that arrives sooner than most scorecards assume, a more accurate forecast barely changes the decision it feeds. This masterclass reframes the goal: measure the error that actually costs you, know which input your plan is exposed to, and deliver a forecast people can act on.

Cover of the ccplanning.net white paper: The Accuracy Trap

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What’s inside

  • Why “improve forecast accuracy” is the wrong target
  • The noise floor — the error no model can remove
  • Bias before MAPE — the error that compounds, and the one the headline metric hides
  • MAPE vs WAPE — why volume-weighting matters
  • Which input moves the roster — volume, AHT, shrinkage or the service target
  • What makes a forecast actionable: timely, at the right grain, and honest about its range

In the ccPlanning white-paper series. Pair it with Why chasing forecast accuracy is the wrong goal, Forecast with ranges, Poisson and natural noise.