Tomorrow's Weather: 40% Chance of Rain

 
When you are told that there's a 40% chance of rain tomorrow, what do you think? When you see the hourly forecasts and learn that for each hour in the morning there's a 40% chance of rain but in the afternoon there's only a 30% chance of rain in each hour, what do you think?

Find out how to interpret these numbers by reading Nick Anthis at The Scientific Activist: Bad Math at The Weather Channel.

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[Photo Credit: South African National Parks]