More or Less: Behind the Stats - WS MoreOrLess: Immigration

How much do migrants cost or benefit a nation? Plus, planning a wedding - when you have friends and family all around the world and a finite number of places at the venue, how do you work out how many invitations to send? Tim Harford speaks to a couple who thought statistics might have the answer.
This programme was first broadcast on the BBC World Service.

Published on Monday, 3rd February 2014.

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