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The Use of Latin Square in Designing Experiments

Latin square is a NxN square with a number of N different elements which are in N distinct orders for the N rows (also the N columns). For example,

1 2 3
2 3 1
3 1 2

is a Latin square. What can it be used in designing a experiment or user study? For instance, if you have N tasks and you want to have someone to do these tasks and measure their performance. One way to do it is to recruit N participants and each participant corresponds to one distinct arrangement of the N tasks. In this way, there is no bias for each tasks.


About Xiang 'Anthony' Chen

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