Design of experiments
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In general usage, design of experiments (DOE) or experimental design is the design of any information-gathering exercises where variation is present, whether under the full control of the experimenter or not. However, in statistics, these terms are usually used for controlled experiments. Other types of study, and their design, are discussed in the articles on opinion polls and statistical surveys (which are types of observational study), natural experiments and quasi-experiments (for example, quasi-experimental design). See Experiment for the distinction between these types of experiments or studies.
In the design of experiments, the experimenter is often interested in the effect of some process or intervention (the "treatment") on some objects (the "experimental units"), which may be people, parts of people, groups of people, plants, animals, materials, etc. Design of experiments is thus a discipline that has very broad application across all the natural and social sciences.
See also
- Control variable
- Research design
- Adversarial collaboration
- Bayesian experimental design
- Experimental techniques
- Glossary of experimental design
- Quasi-experimental design
- Randomized block design
- Generalized randomized block design
- Randomized controlled trial
- Law of large numbers
- Survey sampling
- Taguchi methods
- Clinical trial
- First-in-man study
- Probabilistic design
- Protocol (natural sciences)
- Controlling for a variable
- Multifactor design of experiments software
- Experimetrics: application of econometrics to economics experiments.
- Manipulation checks
