An orthogonal array (more specifically a fixed-element orthogonal array) of s elements, denoted by OAN(sm) is an N × m matrix whose columns have the property that in every pair of columns each of the possible ordered pairs of elements appears the same number of times.

## What is meant by orthogonal array?

An orthogonal array (more specifically a fixed-element orthogonal array) of s elements, denoted by OAN(sm) is an N × m matrix whose columns have the property that in every pair of columns each of the possible ordered pairs of elements appears the same number of times.

## What is orthogonal array testing simple example?

Orthogonal array testing is a black box testing technique that is a systematic, statistical way of software testing. It is used when the number of inputs to the system is relatively small, but too large to allow for exhaustive testing of every possible input to the systems.

What is orthogonal array in Taguchi method?

Taguchi Orthogonal Array (OA) design is a type of general fractional factorial design. It is a highly fractional orthogonal design that is based on a design matrix proposed by Dr. Genichi Taguchi and allows you to consider a selected subset of combinations of multiple factors at multiple levels.

### What is orthogonal experimental design?

Orthogonal experimental design is the study of multi- factor and level of design method, through the part of the test to find out the optimal level combination. To complete test requirements needed less number of experiment. The greater the number of factors and levels, the more obvious the advantage of this method is.

### Is Matrix orthogonal?

A square matrix with real numbers or elements is said to be an orthogonal matrix, if its transpose is equal to its inverse matrix. Or we can say, when the product of a square matrix and its transpose gives an identity matrix, then the square matrix is known as an orthogonal matrix.

What is the best time to perform regression testing?

Regression testing is there to get you ahead of the problems that might exist with your technology. Ideally, you should be using regression testing every time your codebase has been updated or modified.

#### What is the basic idea in boundary value testing?

So, the basic idea in boundary value testing is to select input variable values at their: minimum, just above the minimum, just below the minimum, a nominal value, just below the maximum, maximum and just above the maximum.

#### Is orthogonal to?

Orthogonal means relating to or involving lines that are perpendicular or that form right angles, as in This design incorporates many orthogonal elements. Another word for this is orthographic. When lines are perpendicular, they intersect or meet to form a right angle.

What is meant by Taguchi method?

The Taguchi method of quality control is an approach to engineering that emphasizes the roles of research and development (R&D), and product design and development in reducing the occurrence of defects and failures in manufactured goods.

## What do you mean by orthogonality?

1a : intersecting or lying at right angles In orthogonal cutting, the cutting edge is perpendicular to the direction of tool travel. b : having perpendicular slopes or tangents at the point of intersection orthogonal curves.