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dem82 [27]
3 years ago
9

which of the following principles of experimental design ensures that the explanatory variable, and not some variable over which

the experimenter has no control, is causing observed changes in the response variable?
History
2 answers:
serious [3.7K]3 years ago
3 0
Control, I just put the answer in and got it right! 
MaRussiya [10]3 years ago
3 0

control is right yay

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