Yanqing Hu, Feifang Hu, ASYMPTOTIC PROPERTIES OF COVARIATE-ADAPTIVE RANDOMIZATION, The Annals of Statistics, Vol. 40, No. 3 (June 2012), pp. 1794-1815 ...

The following example * analyzes an experiment to investigate how snapdragons grow in various soils. To eliminate the effect of local fertility variations, the experiment is run in blocks, with each ...