Análise Estatística do Erro Padrão da Média Ponderada na Interpolação de Anomalias Gravimétricas

Nelsi Côgo de Sá, Denizar Blitzkow

Abstract


The weighted mean is a mathematical model widely used in two-dimensional interpolation. A statistical analysis of the standard errors produced by this model when interpolating gravity anomalies is the subject of this work. The sampling was carried out by random search on a population of gravity stations. Subsequently the Bouguer anomalies of the sampled points were interpolated. The differences between the observed and the interpolated anomalies constitute a random sample for which it is postulated the normal probability density function. The statistical validity of this postulate is submitted to parametric and non-parametric hypothesis testing. The results show that there are no systematic errors in the sample and that the variance depends strongly on the number of points used in the interpolation.



Keywords


anomalias gravimétricas; interpolação



DOI: http://dx.doi.org/10.22564/rbgf.v4i2.1042







 

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