Latin Square

A Latin square is an arrangement of symbols arranged in a grid where each symbol appears exactly once in each row and each column. Imagine a Sudoku puzzle but with fewer restrictions; the key idea is that no symbol repeats in any row or column. Latin squares are used in experiments, design of surveys, and error-checking, as they help organize data so each variable occurs evenly and without bias across different conditions. They are useful in statisticians’ tools for ensuring balanced and fair comparisons.