When we analyzed the data manually, we'd use a spreadsheet program, plug the information in, and modify it to fit. With the DOE software, we plug the data in and it comes out as graphs. DeHart also touts the program's user-friendly format. It's much easier to understand and interpret the data, because you can switch between visual and numeric screens. Classical, fractional-factorial design Experiment tests a fraction of all possible combinations of factors.
Emphasis is placed on using statistical techniques and mathematics.
Experiment defines the interacting variables, or factors. Each experimenter can design a different set of experiments. The biggest strides for Stahl's DOE program, however, were made when upper management began to notice the benefits that the software was providing. Select another article. Return to Quality Magazine's home page.