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CPS2125 Dian Handayani et al.






               See Rao and Molina (2015) for further details of second-order approximation
                                                          and  the  estimator  of  MSE
               to  the  Mean  Square  error  (MSE)  of   
               approximation.

               3.  EBP under Unit Level Lognormal Model:
                   Berg  and  Chandra  (2014)  developed  Empirical  Best  Prediction  (EBP)
               method  to  estimate  linear  parameter,  i.e.  population  mean,  for  variable  of
               interest  have log normal distribution. The EBP is derived under unit level
               lognormal model as follows:



                                   2
                                                   2
               where ~ (0,  ), ~ (0,  ) and  and  are
               independent. Based on (5),  is given by :



               The EBP for population mean in small area-   (denoted by ) is given by :









               By properties of the normal distribution, for  ∈ ̅,
                                                                                     (8)


               By (7) and the moment generating function of the lognormal distribution, for
                ∈ ̅
                    


               By (9) and (7), the Best Predictor (BP) for  is given by:




                                  2
               Since  = (0, 1,  ,  )  is usually unknown , the  is replaced with   to
                                      2
                                       
               obtain the Empirical Best Prediction (EBP)     as follows :



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