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Professor Binkie has been studying how playing video games affects a student's performance on the SAT. Using 5,000 students, the Professor is monitoring the amount of time they play the video games and how they score on the test. Which of these would be a variable that Professor Binkie would be unable to control during his research? A) total number of students B) numbers of boys and girls C) what date they will take the SAT D) how hard the students try on the SAT

Respuesta :

D, how hard the students try on the SAT seems the most reasonable.

Answer: Option D

Explanation:

The variable that can be controlled is known as controlled variable. But everything is not under control while performing an experiment.

The variable that can be controlled during the time of experiment is number of boys and the number of girls, the SAT that they will choose and total number of students.

The efforts that the students will put on SAT cannot be controlled. This is a factor which can hamper the result of the experiment.

So, option D is the correct answer.

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