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Jack conducts an experiment to see whether fear makes mice run through mazes faster. He first selected a sample of 60 mice and then divided them into a control group and an experimental group. He plays a loud sound for the experimental group and induces fear into them. He noticed that the control group mice were running faster. He discovers that someone left a piece of cheese accidently at the end of the maze for the control group which should not have been there.
What is the independent variable from the study above?

Respuesta :

moonsmile

Answer:

Explanation:

loud sound

Korana

Answer:

The independent variable is the loud sound.

Explanation:

An independent variable is the variable that is purposefully changed or controlled in an experiment. The piece of cheese was not purposefully left there and is not the independent variable.

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