More or Less: Behind the Stats

The NHS in England has missed its four-hour A&E waiting time target with performance dropping to its lowest level for a decade, it's reported. Tim Harford takes a closer look at the numbers. Plus: do 85 people really own half the world's wealth; bad luck and cancer; beware the statistics which are true but unfair; and the dubious fashion for international rankings.

What is the most important number in the world? Robert Peston tells us and Helen Joyce and Dr Hannah Fry choose their most memorable numbers from 2014. This programme was first broadcast on the BBC World Service.

Tim Harford and guests look back at some of the weird and wonderful numbers of 2014. Featuring contributions from Simon Singh, Sir David Spiegelhalter, Helen Joyce, Nick Robinson, Helen Arney, Pippa Malmgren, Paul Lewis and Carlos Vilalta.

How optimistic are people about the future? The BBC's Evan Davis tells More or Less as the programme looks back at the most interesting and important numbers of 2014. This programme was first broadcast on the BBC World Service.

What is so special about 39,222 Mexican teachers? In the first of three episodes looking back at 2014, Mexico specialist Professor Carlos Vilalta tells Tim Harford. This programme was first broadcast on the BBC World Service.

Did almost 80% of the males born in the Soviet Union in 1923 not survive World War Two, as has been claimed online? Plus: the problem with China’s economic figures. This programme was first broadcast on the BBC World Service.

Journalists and author dissect Zimbabwe's economic struggles post-2009, highlighting budget allocations for medical equipment vs. official residences, challenges in measuring unemployment rates, public spending misallocation, economic transformations with US dollar adoption, and effects of deflation on the economy.

"About one-third of American girls become pregnant as teenagers” a recent article claimed. More or Less asks if this is true and looks at the long-term pregnancy trends in developed countries. Plus: Does 55% of communication really come from body language and gestures, 38% from facial expression and only 7% from words? This programme was first broadcast on the BBC World Service.

England captain Wayne Rooney made his 100th appearance last weekend but former England star Chris Waddle claims that it’s easier to win caps now than it was in previous generations. Wesley Stephenson asks whether Waddle is right and how many caps would greats like Bobby Moore, Maradona and Pele have won if they’d played in today’s era. Plus the programme hears from Professor Carlos Vilalta from the University of California San Diego and Steven Dudley from Insight Crime about claims that “98% of homicides in Mexico are unsolved.” An amazing statistic but is it true? This programme was first broadcast on the BBC World Service.

The movie Gone Girl claims homicide is a leading cause of death for pregnant women. Ruth Alexander asks Dr Katherine Gold from the University of Michigan if this is true. And can we trust country rankings seen in the growing number of performance indices? We speak to the Economist’s international editor Helen Joyce. This programme was first broadcast on the BBC World Service.