Chemical Balance Weighing Design with Different Variances of Errors

  • Bronisław Ceranka
  • Małgorzata Graczyk
Conference paper
Part of the Studies in Classification, Data Analysis, and Knowledge Organization book series (STUDIES CLASS)


The paper is studying the estimation problem of individual weights of objects using a chemical balance weighing design under the restriction on the number of times in which each object is weighed. We assume that errors are uncorrelated with different variances. The necessary and sufficient condition under which the lower bound of variance of each of the estimated weights is attained is given. For a new construction method of the optimum chemical balance weighing design we use the incidence matrices of the balanced incomplete block designs and the ternary balanced block designs.


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Copyright information

© Springer-Verlag Berlin · Heidelberg 2005

Authors and Affiliations

  • Bronisław Ceranka
    • 1
  • Małgorzata Graczyk
    • 1
  1. 1.Department of Mathematical and Statistical MethodsAgricultural University of PoznańPoznańPoland

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