Tag Archives: variation

How to be fooled by randomness

This is a roulette wheel. It is a machine for producing numbers between 0 and 36. Sometimes it produces a 7… Then sometimes it produces a 13… If a 7 is produced on one spin and a 13 on the … Continue reading

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I don’t know much about control charts (but I know what I like)

I’ve never been trained in using control charts, never passed a test or worked with anyone who’s knowledgeable in them. Everything I’ve learned has been off of the Internet Or books, books as well, they’re famously good for learning. Cunninghams Law … Continue reading

Posted in data, deming, information, learning, measures, statistics, systems thinking | Tagged , , , , | 1 Comment

Only bullies, cowards or fools set targets

This is the story of a teacher in a UK school who was set a target of 75% exam pass rate. This summer the pass rate was 65%. If we ignore all the things we know about measures and targets … Continue reading

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Weather and climate

Freaking out because your KPIs aren’t working like they should? Here’s a tip: Allow the passage of time to occur. Just as it’s always darkest before dawn, data is always worse before it gets better. All you have to do … Continue reading

Posted in data, statistics | Tagged , , | 1 Comment

Weather and climate

Freaking out because your KPIs aren’t working like they should? Here’s a tip: Allow the passage of time to occur. Just as it’s always darkest before dawn, data is always worse before it gets better. All you have to do … Continue reading

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