When an observed difference . in responses between the groups in an experiment i

Question

When an observed difference . in responses between the groups in an experiment is too large to be explained in the random assignment, we say that the result is by chance variation .A forms groups kloak of experimental units that are similar with respect to a variable that is expected to affect the response. Treatments are assigned at random within each block. Responses are blocks after accounting for the differences between the blocks. When the blocks are chosen wisely, it is easier to determine if one treatment is more effective than another is a common form of blocking for comparing just two treatments. In some marched pairs design, each subject are paired, and the two treatments are randomly assigned within each pair

Explanation / Answer

1. A Randomization/Randomized Block Design forms groups of blocks of experimental units that are similar with respect to a variable that is expected to affect the response. Treatment are assigned at random within each block.

2.A MATCHED PAIR is a common form booking for comparing just two treatments.

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