In a taste test comparing popcorn brands A, B, C, and D, the experimenter decides to use a Latin square for counterbalancing. Assuming that ten participants will be tested in each of the sequences used, how many people will be needed to complete the study?
A)40
B)10
C)80
D)4

Question

Quizplus · Accepted Answer

A Latin square design requires that each treatment appears exactly once in each row and column. With four treatments (A, B, C, D), a 4x4 Latin square is used, requiring 4 sequences. With 10 participants per sequence, 40 participants are needed in total.

In a Taste Test Comparing Popcorn Brands A, B, C