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What is the independent variable of Does drinking more coffee increase a persons math test scores?
Wiki User
∙ 9y ago
The quantity of coffee that is consumed per some measure of time within a period starting some fixed amount of time before the test. Ideally, any study should also take account of the strength of the coffee, and the body mass of the consumer.
Wiki User
∙ 9y ago
Wiki User
∙ 9y ago
The independent variable is the amount of coffee consumed by a student.
The dependent variable, if there is one, may or may not be his math scores. As far
as I know, the dependency has not been established in controlled experiments yet.
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