What event marked the beginning of the US Civil War? The main cause of the Civil War has been debated for years. The first military action was Confederate forces attacking Union Fort Sumter.
1 Lift Charts. 2  The lift curve is a popular technique in direct marketing. 3  The input required to construct a lift curve is a validation dataset that has been scored by appending to each case the estimated probability that it will belong to a given class.
deÂ·rivÂ·aÂ·tive. In calculus, the slope of the tangent line to a curve at a particular point on the curve. Since a curve represents a function, its derivative can also be thought of as the rate of change of the corresponding function at the given point.