A Latin Square is a grid arrangement used in statistics and experimental design, where each symbol appears exactly once in each row and column. Typically, it consists of n rows and n columns, filled with n different symbols. This structure helps control for variability in experiments by ensuring that each treatment appears equally across different conditions. Latin squares are particularly useful in agricultural experiments, psychology, and other fields where researchers want to minimize the effects of confounding variables. They can also be extended to more complex designs, such as Graeco-Latin Squares, which incorporate additional layers of structure for more intricate analyses.