control group - definition in the Business English Dictionary - Cambridge Dictionaries Online

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English definition of “control group”

control group

noun [C]
 
 
( also control) MARKETING
a group of people who are used for comparing another group to in a test or experiment: The larger the control group sample is, the more reliable and repeatable the results of the promotion will be. →  Compare test group
(Definition of control group from the Cambridge Business English Dictionary © Cambridge University Press)
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