Journal of Official Statistics, Vol.7, No.1, 1991. pp. 7791

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Design for Composite Estimation With Changing Survey Frames

We consider the design for composite estimation in rotating surveys with changing frames. These designs require not only the specification of the rotation rate but also the sampling rate for births. We report on and extend previously unpublished results on the optimum design for change in mean and change in total.

We show that designs which sample births optimally may be considerably more efficient than the common design in which births and continuing units are sampled with equal rates. We then consider constrained optimum designs in which the sample rate for births is optimised given a fixed sample rotation rate. The treatment of selected births over many periods is also examined.

Rotating surveys; composite estimation; global optimum design; constrained optimum design; changing survey frames.

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