U.S. Justice Department: Does Neighborhood Watch reduce crime? Neighborhood Watch programs became popular in the 1970s and 1980s; by 2000, roughly 40% of the U.S. residential population was covered by such citizen crime-watching programs.
Definition of actuarial. 1  1 : of or relating to actuaries. 2  2 : relating to statistical calculation especially of life expectancy.
Actuarial certification, by the Society of Actuaries or the Casualty Actuarial Society, is accomplished through a battery of ETS-type examinations with a prescribed syllabus, which for the first several examinations are primarily mathematical and statistical.