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Leno4ka [110]
3 years ago
6

What is the purpose of having a control and a variable in an experiment?

Biology
1 answer:
11Alexandr11 [23.1K]3 years ago
7 0

a control helps to increase the reliability of the results. it allows a scientist to compare it to other group(s) in an experiment. if a scientist notices a significant different btwn the control and the other groups, he can logically conclude that the independent variable has an impact on the dependent variable.

a variable is any factor, trait or condition that can exist in differing amounts or types. there are usually three tpes of variables in experiments: the independent, dependent and contolled. the independent variable variable is the one that is changed by the scientists to figure it's affect on something.

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1. C

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gayaneshka [121]
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Explanation:

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