A Latin Square is a grid arrangement where each symbol appears exactly once in each row and column. Typically, the symbols are numbers or letters, and the size of the square is defined by the number of symbols used. For example, a 3x3 Latin Square might use the symbols 1, 2, and 3, arranged so that each number appears once per row and column. Latin Squares are widely used in statistics and experimental design, particularly in the field of agricultural research and psychology. They help control for variability by ensuring that each treatment appears in each condition, allowing for more accurate comparisons and analyses.