TABLE 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 Table 11-6, what are the degrees of freedom of the F test statistic for testing the block effects?
Definitions:
Sensory Intelligence
The ability to understand and manage sensory input, including recognizing how one processes sensations and effectively using this knowledge in daily life.
Sir Francis Galton
A British polymath known for his pioneering studies of human intelligence and for introducing the use of questionnaires and surveys for collecting data.
Spatial Abilities
The capacity to understand, reason, and remember the spatial relations among objects or space.
Stanford-Binet Scales
A standardized test that assesses intelligence and cognitive abilities in children and adults, ranging from age two to adulthood.
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