size while taking into account possible nonresponse biases by modeling the response mechanism conditional on household size …. Various models are considered together with regression estimation and imputation-based poststratification. Comparisons are … that poststratification, response modeling and imputation should be used instead of the current method in official …

It is well-known that nonresponse affects the results of surveys and can even causebias due to selectivities if it … unit nonresponse. The data base is the Ifo Business TendencySurvey, which was established in 1949 and has more than 5 … or sub-sector and that nonresponse ismore frequent in economically good times. …

,these indicators can also be biased. In addition, time-dependent nonresponse patternscan produce even more complex forms of biased … results. This paper examines aframework which kind of nonresponse patterns lead to biases and decreases in performance …

about the effects of nonresponse exist but only less is known in case of business surveys. This thesis deals with the …

missingness is evaluated: listwise, mode imputation, random imputation, hot-deck, imputation by polytomous regression and random …

Incorrect data sets may bias statistical results. To avoid this, various processing, edi ting and imputation steps were …

Arbeitsschritte Imputation und Konsolidierung. … concrete implementation is described, in particular the profiling and the new work steps of imputation and consolidation, which …

Profiling sowie die neuen, zentral durchzuführenden Arbeitsschritte Imputation und Konsolidierung integriert. Testläufe und … been incorporated as well as the new work steps of imputation and consolidation, which have to be carried out centrally …