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About this resource:


Authority Status: 
Original Statement
Indexing Status: 
Yes
Education Level: 
6, 7, 8
Subject: 
Science
Statement Notation: 
1B (6-8) #2
Description en-US:  If more than one variable changes at the same time in an experiment, the outcome of the experiment may not be clearly attributable to any one of the variables. It may not always be possible to prevent outside variables from influencing the outcome of an investigation (or even to identify all of the variables), but collaboration among investigators can often lead to research designs that are able to deal with such situations.
Language: 
English

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