PWCEmpirical
fun PWCEmpiricalRV(breakPoints: DoubleArray, proportions: DoubleArray = DoubleArray(breakPoints.size - 1) { 1.0 / (breakPoints.size - 1) }, streamNum: Int = 0, name: String? = null): PWCEmpiricalRV
fun PWCEmpiricalRV(histogram: HistogramIfc, streamNum: Int = 0, name: String? = null): PWCEmpiricalRV