statistical

But four former government scientists with experience doing statistical analyses of health harms told ProPublica that the myeloid leukemia risk calculation was sound.

He worked as a statistical analyst since his retirement from football in 1992 and was a club ambassador at Villa Park.

Using state-of-the-art statistical models, they found that relationships emerged between chimpanzees' sequential actions which matched those found in human behaviours.

"We knew there would not be any statistical power to most of this, but we were able to gather data that was usable."

The researchers filtered out the influence of other factors such as family income or parental education in their statistical analysis.