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natita [175]
4 years ago
15

In an experiment, a researcher wants to avoid the presence of

Social Studies
1 answer:
topjm [15]4 years ago
8 0
The answer to this question is <span>confounding variables. 
</span><span>confounding variables Refers to the type of variables that researchers couldn't control (such as genetical anomally or natural disasters)
</span>The existence of this type of variables will damage the validity of the experiment results and make it untrustworthy.
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