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What is the most difficult part of a controlled experiment? testing only one variable testing two variables testing multiple variables testing zero variables
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What is the most difficult part of a controlled experiment?

testing only one variable
testing two variables
testing multiple variables
testing zero variables

User AlfaTeK
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2 Answers

4 votes

Answer:

Testing only one variable,

Step-by-step explanation:

User Matt Moore
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3 votes

Answer:

Testing only one variable

Step-by-step explanation:

User Mpriya
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