The phrase missing link is a colloquial term describing a transitional form between taxa in an evolutionary scheme. Because the primary tenet of evolution is morphological change over time, there is necessarily going to be transitional forms between any two species sharing an ancestor-descendant relationship. Charles Darwin recognized this, and in fact the apparent lack
The America’s Missing: Broadcast Emergency Response (AMBER) Alert system was created after the abduction and murder of Amber Hagerman in 1996. AMBER Alerts are police-issued notifications providing information (e.g., about the abductor’s car, the child’s name, the child’s last known location) to the public in order to help locate a missing child and abductor. Alerts
Introduction and Goals Missing Data And Their Consequences Missing data are common occurrences in health economics and health outcomes research. The patterns of missing data can take many forms. Item missingness occurs when values are missing for selected variables (items) for a subset of subjects or cases; often the subset of cases missing one variable