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Abstract A new solution to the problem of variance estimation with one unit per stratum is presented. This method may lead to smaller bias in variance estimation, in many situations, than the methods of 'collapsed strata'. It requires that we can associate with the strata concomitant variables which are correlated with the strata means. Several numerical examples with one or two concomitant variables are considered.
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Hartley et al. (Mon,) studied this question.
synapsesocial.com/papers/6a100ac92badbc352aff342d — DOI: https://doi.org/10.1080/01621459.1969.10501016
H. O. Hartley
Medical University of South Carolina
J. N. K. Rao
Guiyang Medical University
Grace Kiefer
Journal of the American Statistical Association
Mitchell Institute
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