Design of experiments, an Uncommon card

The card carries these facts from its Wikipedia article.

• In general, the design of experiments involves decisions about which aspects of the system to change and which to control based on hypotheses about the sources of variance in the aspects of the system considered by the experimenter.
• DOE is generally associated with experiments where the design introduces conditions that directly affect the variation, but DOE may also refer to the design of quasi-experiments, in which natural conditions that influence the variation are selected for observation.
• In its simplest form, an experiment aims at predicting the outcome by introducing a change of the preconditions, which is represented by one or more independent variables, also referred to as "input variables" or "predictor variables." The change in one or more independent variables is generally hypothesized to result in a change in one or more dependent variables, also referred to as "output…

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Design of experiments article was read about 86,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 74 and blocks with 64: each hit it takes is cut by 26 %.

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