Orthogonal array testing is a statistical method used in software testing to systematically evaluate the interactions of multiple variables or factors with minimal test cases. This technique is particularly useful in situations where there are numerous combinations of input variables, making exhaustive testing impractical. ### Key Concepts: 1. **Orthogonal Arrays**: An orthogonal array is a structured way of arranging combinations of factors (variables) such that every pair of levels of each factor appears an equal number of times across all combinations.
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