Browsing Research Report by Title

Now showing items 128-130 of 130

    • Variance estimates based on knowledge of monotonicity and concavity properties 

      Dahlbom, Ulla (University of Gothenburg, 1998-08-01)
      In problems dealing with regression functions the choice of model and estimation method is due to a priori information about the regression function. In some situations it is motivated to consider regression functions with ...

    • VISUAL EVALUATIONS OF STATISTICAL SURVEILLANCE 

      Frisén, Marianne; Cassel, Claes (University of Gothenburg, 1994-03-01)
      A computer program which simultaneously gives visual information on important characteristics is presented. Surveillance, that is continual observation of a time series with the goal of timely detection of possible important ...

    • When does Heckman’s two-step procedure for censored data work and when does it not? 

      Jonsson, Robert (2008-02-22)
      Heckman’s two-step procedure (Heckit) for estimating the parameters in linear models from censored data is frequently used by econometricians, despite of the fact that earlier studies cast doubt on the procedure. In this ...