Stemann Consulting
ENDE
Contact
Trainings
All trainings
Six Sigma
Six Sigma Yellow Belt TrainingSix Sigma Green Belt TrainingSix Sigma Black Belt TrainingSix Sigma Master Black Belt TrainingSix Sigma Champion TrainingDesign for Six Sigma Training
Digital Transformation TrainingDesign of Experiment TrainingData Literacy TrainingStatistical Methods TrainingLean Management Basic TrainingData Mining TrainingProcess Mining Training
Consulting
Consulting ServicesProjects & Case ExamplesCustomers & Industries
About Us
Our TeamStemann Consulting InternationalCooperations
InsightsBlogContact
DEEN
50% hit rate – world class or just two shots?

50% hit rate. World class – or just two shots?

Data LiteracyPublished 13 September 20260 views

  • A striker takes two shots at goal. One goes in. 50%. Sounds like Champions League level.
  • Until we ask: How many shots were there?
  • The same thing happens in production: after a parameter change, ten parts are inspected. Nine are good; before, it was eight.
  • So: scrap cut in half!
  • Maybe. Or maybe it was simply chance.
  • Because 1 out of 2 and 50 out of 100 produce the same percentage – but statistically they tell two completely different stories.
  • A percentage without a sample size is like the league table after the first matchday: correct, but not a reliable basis for decision-making.
  • Two shots do not make a world-class striker. Ten parts do not yet make a capable process.
  • Find out more about Data Literacy and reliable data-driven decision-making on our homepage.

50% hit rate. World class – or just two shots? | Stemann Consulting