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jerryking : guessing   3

How to make good guesses
| FT | Tim Harford

“base rate”,

Base rates are not just a forecasting aid. They’re vital in clearly understanding and communicating all manner of risks. We routinely hear claims of the form that eating two rashers of bacon a day raises the risk of bowel cancer by 18 per cent. But without a base rate (how common is bowel cancer?) this information is not very useful. As it happens, in the UK, bowel cancer affects six out of 100 people; a bacon-rich diet would cause one additional case of bowel cancer per 100 people.

Thinking about base rates is particularly important when we’re considering screening programmes or other diagnostic tests, including DNA tests for criminal cases.
base_rates  communicating_risks  economics  forecasting  guessing  howto  predictions  probabilities  Tim_Harford  ratios 
april 2016 by jerryking
reportonbusiness.com: Best to deliver bad news facts
February 18, 2009 G&M column by SUSAN PINKER. When it
comes to bad news, we first protect ourselves, and then we protect
others through "Denial". When there's really bad news, there's reliable
evidence that it really is best to face the facts. First, you have to
know what the bad news is, what the outcomes are, what the percentages
are," Dr. Feldman says. "Then you have to give people options. You have
to give them some power - ideas about how they're going to manage
because you don't just leave them hanging there. You have to hold out
some hope."
anomalies  base_rates  Communicating_&_Connecting  crisis  difficult_conversations  forecasting  generating_strategic_options  guessing  managing_people  predictions  probabilities  ratios  Susan_Pinker  face_the_facts  bad_news 
february 2009 by jerryking

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