Array Orthogonal. Three two level factors l8. Due to this the factors can be evaluated independently of each other.
Taguchi orthogonal array oa design is a type of general fractional factorial design. The factors are independent from each other and in balance. For example when a train ticket has to be verified factors such as the number of passengers ticket number seat numbers and train numbers have to be tested.
This number is the index of the array commonly denoted lambda.
Genichi taguchi and allows you to consider a selected subset of combinations of multiple factors at multiple levels. The array has strength t if in every n by t submatrix the qt possible distinct rows all appear the same number of times. The orthogonal arrays constructed with a fraction of a full factorial array but the orthogonality in dependency between the factors is kept. Due to this the factors can be evaluated independently of each other.