Lye, J. N.; Hirschberg, J. G. - Department of Economics, Faculty of Business and Economics - 2012
In this paper we demonstrate the construction of inverse test confidence intervals for the turning points in estimated … nonlinear relationships by the use of the marginal or first derivative function. First, we outline the inverse test confidence … turning-points for a cubic, a quartic and fractional polynomials estimated via regression analysis and the inverse test …