fractional factorial design

Fractional factorial design is a method used in experiments to study multiple factors efficiently by testing only a subset (fraction) of all possible combinations. Instead of examining every possible scenario, it selects specific combinations that provide enough information to understand the main effects and key interactions. This approach saves time and resources while still offering valuable insights into how different factors influence the outcome. It is especially useful when dealing with many variables, allowing researchers to identify important factors without conducting an exhaustive number of experiments.