Attitude on the concept of designing and analyzing experiments and its application in the engineering system

Knowledge designing experiments is a powerful tool for engineers and managers who want to design or produce their products with high quality and low cost. As an irrefutable fact, the industry has recognized the increasing importance of quality. Today, quality is a business strategy for increasing market share, and organizations achieve global quality through experiments designed. Experiment design is one of the strongest techniques are improving quality and increasing productivity. In this way, by performing some tests, consciously changes are made to the process or system in order to examine their impact on the functional characteristics or response of the process or system to them. The design of experiments is the systematic manipulation of a number of variables in which the impact of these manipulations is evaluated and concluded, and the results are implemented. Test design and testing a set of techniques and statistical methods for collecting data from designed experiments, analysis, and, finally, conclusions and inferences about them. Several books have been written about theoretical issues and discuss how to design and analyze experiments. An analysis of a designed experiment usually requires a large number of numerical calculations that, as the number of data and variables examined increases, the complexity and timeliness of the problem are increased so that manual execution makes them impossible. Undoubtedly, the existence of many software packages in statistics, due to the need for and advancement in computer science, contributed greatly to the accuracy and convenience of data analysis.

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