Array Orthogonal. One two level and seven three level factors. Orthogonal array testing is a systematic and statistical way of a black box testing technique used when number of inputs to the application under test is small but too complex for an exhaustive testing.
Genichi taguchi and allows you to consider a selected subset of combinations of multiple factors at multiple levels. Orthogonal arrays taguchi designs l4. Seven two level factors l9.
Due to this the factors can be evaluated independently of each other.
The factors are independent from each other and in balance. The orthogonal arrays constructed with a fraction of a full factorial array but the orthogonality in dependency between the factors is kept. 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. A table of taguchi orthogonal arrays is provided below for values of p number of parameters ranging from 2 to 5 and l number of levels ranging from 2 to 5.
