Sankhya: The Indian Journal of Statistics
1995, Volume 57, Series B, Pt. 3, pp. 405--419
ROBUSTNESS OF AUGMENTED BIB DESIGNS AGAINST UNAVAILABILITY OF SOME OBSERVATIONS
XIAOPING DUAN, SANPEI KAGEYAMA, Hiroshima University
SUMMARY. Robustness of Augmented Balanced Incomplete Block (ABIB) designs is investigated, when any number of observations in a block or any two observations in the design are lost, in terms of efficiency of the residual design. The investigation shows that ABIB designs fairly robust against the above mentioned unavailability of observations.
AMS (1980) subject classification. 62K10, 05B05, 62K05.
Key words and phrases. BIB, augmented BIB, efficiency, C-matrix.
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