Question

Suppose we are using a randomized block design to test various medical treatments, and we are using patients, who receive the treatments, to create blocks. True or False: We should ensure that the patients within a block are as similar as possible. Explain.

Answer 1

The statement given in the question is TRUE.

In randomized block design, group the experimental material into blocks of sizes and blocks are constructed such that the experimental units within a block are relatively homogeneous and resemble to each other more closely than the units in the different blocks. So, block is a group of experimental units that are known and prior to the experiment. So, test various medical treatments, we should ensure that patients who receive same treatments may create block. Thus, block are similar within in own domain.