In nearly every study that includes a large number of classrooms, there is also wide variability in the opportunities that contribute to improved achievement. (educationnext.org)
As an airborne infection, influenza is transmitted easily and quickly, and its effects can be acute, although there is wide variability in response to infection. (genomemedicine.biomedcentral.com)
«There's a very, very wide variability in what's being delivered as clinical care,» says Lurie, noting that case fatality rates differ dramatically in different locations. (sciencemag.org)