A sampling metaphor

Looking for a new metaphor to explain how survey sampling works?

Next time someone tells you they don’t believe a small sample poll can possibly tell you anything, just say to them ‘OK, then. Next time you have to have a blood test, why don’t you ask them to take the whole lot?’

Nick Moon, “Curtains at Number Ten: predicting the general election” {PDF}, Significance (March 2010; Volume 7 Issue 1)

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Written on February 22, 2016