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Abstract We write a linear model in the form , where is an unknown parameter and ξ is a hypothetical random variable with a given dispersion structure but containing unknown parameters called variance and covariance components. A new method of estimation called MINQUE (Minimum Norm Quadratic Unbiased Estimation) developed in a previous article 5 is extended for the estimation of variance and covariance components.
C. Radhakrishna Rao (Wed,) studied this question.