Experimental design. Experimental design is a process of planning and carrying out scientific experiments to investigate a hypothesis or research question. This involves carefully designing an experiment that can test the hypothesis and controlling other variables that might influence the results. Experimental design generally includes. A case study is a detailed study of a specific topic, such as a person, group, place, event, organization, or phenomenon. Case studies are commonly used in social, educational, clinical, and business research. A case study research design usually involves qualitative methods, but quantitative methods are sometimes used as well. A research design is a strategy for answering your research question using empirical data. Creating a research plan means making decisions about: Your overall research goals and approach. Whether you rely on primary research or secondary research. Your sampling methods or subject selection criteria. Your data collection, The Taguchi method is about reducing variation in a process through robust experiment design. The overall goal of the method is to produce a high quality product at low cost to the manufacturer. The Taguchi method was developed by Dr. Genichi Taguchi of Japan who maintained this variation. Single-case experimental designs SCEDs represent a family of research designs that use experimental methods to study the effects of treatments on outcomes. The fundamental unit of analysis is the single case which may be an individual, clinic or community, ideally with replications of effects within and or between cases.