SCENARIO 11-6 An agronomist wants to compare the crop yield of 3 varieties of chickpea seeds.She plants all 3 varieties of the seeds on each of 5 different patches of fields.She then measures the crop yield in bushels per acre.Treating this as a randomized block design, the results are presented in the table that follows.
-Referring to Scenario 11-6, the randomized block F test is valid only if there is no interaction between the variety of seeds and the patches of fields.

Question

SCENARIO 11-6 An agronomist wants to compare the crop yield of 3 varieties of chickpea seeds.She plants all 3 varieties of the seeds on each of 5 different patches of fields.She then measures the crop yield in bushels per acre.Treating this as a randomized block design, the results are presented in the table that follows. 
-Referring to Scenario 11-6, the randomized block F test is valid only if there is no interaction between the variety of seeds and the patches of fields.

Quizplus · Accepted Answer

The randomized block F test assumes no interaction between the factors being tested (in this case, the variety of seeds and the patches of fields). If there is an interaction, it may invalidate the results of the test. Therefore, the statement is true. The randomized block F test assumes no interaction between the treatments (varieties of seeds) and the blocks (patches of fields). If there is interaction present, the results may be confounded and the validity of the F test may be compromised.

SCENARIO 11-6 an Agronomist Wants to Compare the Crop Yield