The main theoretical and exploratory objective of this book is to propose methods for predicting subpopulation characteristics and to analyse the properties of the predictors, taking into account the correlation between the random variables. The practical objectives include:
– adapting the methods of small area estimation, a model-based approach, for economic data obtained in longitudinal surveys;
– proposing and using the author’s overpopulation models belonging to the class of general linear mixed models;
– proposing and using original model verification methods;
– proposing and applying the author’s methods of prediction and assessment of prediction accuracy of subpopulation characteristics for the proposed class of models;
– demonstrating the applicability of the proposed methods to real economic data – simulation studies conducted using the Monte Carlo method.