We will also use two example data sets to illustrate the three principles and their application to two straightforward design scenarios: The Complete Randomized Design with the Plasma Etching ...

Completely randomized designs should only be used in the very particular case of spatial homogeneity at large scale. Illustrations in ecological field experimentation are given and discussed. Ecology ...

Educational research often studies subjects that are in naturally clustered groups of classrooms or schools. When designing a randomized experiment to evaluate an intervention directed at teachers, ...