
421
14
Probability, Sensitivity,
andUncertainty
Introduction
Once a forensic investigation has been performed given the best available data, there is
always a measure of uncertainty of some of the parameters. For example, the coecient of
friction in an accident reconstruction is never exactly known, but rather it is estimated. It
may be important to know how sensitive some of the parameters are to change, which may
aect the equations that are used in the reconstruction. As an example, it is known that
T-bone collisions are not very sensitive to preimpact angles and that collinear collisions
are quite sensitive to these angles. Parametric ana ...