The top row shows variation in a zooplankton, Daphnia: the morph on the right is produced in the presence of a predator cue. The second row shows an example of dimorphic variation in horn length, ...

Variance is a measurement of the spread between numbers in a data set. Investors use the variance equation to evaluate a ...

The 'robustness' of a phenotypic trait is the absence or low level of variation when faced with a given incoming variation. Analysis of the propagation of variation in a biological system has been ...

As healthcare providers wade through hundreds of often burdensome reportable quality measures, a new National Quality Forum study offers guidance on reducing variation and repetition. In 2013, NQF ...