Randomized Complete Block Design Violation
In a study evaluating the effectiveness of three teaching methods, students are grouped into blocks based on their pre-test scores. Which of the following would violate a principle of a randomized complete block design?
A
Ensuring each method appears once in each block
B
Using different random assignments within each block
C
Assigning methods based on teacher preference within blocks
D
Randomizing the order of implementation within blocks
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