Keheterogenen data as the cause of the high level of error can occur because of social struktuk that exist in society. Various sampling techniques emerged one of his goals is to reduce keheterogenen in order to obtain data with smaller error rates. One of them is a multistage sampling aimed to obtain a smaller error rate due to the variance of data between hierarchies heterogen.dari enough data.
Multilevel statistical modeling is an equation model that aims to minimize errors due to data structure hirarcy. Introduced by Goldstein. Multilevel analysis can be applied to almost all fields, medicine, marketing, education, social and economic. And in a variety of scope statistikpun modeling, multilevel analysis can be applied. Is associated with experimental design, multivariate modeling, categorical data analysis and non-categorical.
Several studies have shown that the analysis of multilevel data provide a better parameter estimator with the MSE (Mean Square Error) is smaller than the analysis of multilevel data without due process.
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