Question

1. list some of the controlled variables in the experiment. (identify at least three.)

scenario 4.

1. peter loves music. he believes that he does his homework better and faster when he listens to music. his parents say that music is distracting when studying.

a. state the problem (question) here.
b. write a testable hypothesis in the “if......, then ...” form. be sure it is in this form and write a complete sentence.
c. describe in 3 - 6 sentences an experiment peter could do to test his hypothesis.
d. what is the independent variable?
e. what is peter’s dependent variable?
f. what is the control?
g. list some variable that must remain constant.

Explanation:

a. The problem is to determine whether listening to music helps or hinders Peter's homework - doing performance.
b. If Peter listens to music while doing his homework, then he will complete it faster and with better quality.
c. Peter could divide his homework into two equal - sized sets. For one set, he listens to his favorite music at a moderate volume while working. For the other set, he works in complete silence. He should time how long each set takes and rate the quality of his work on a scale (e.g., 1 - 10) for both.
d. The independent variable is the presence or absence of music.
e. The dependent variable is the speed and quality of Peter's homework completion.
f. The control is doing homework in silence.
g. Controlled variables could be the type of homework (e.g., all math homework), the time of day he does the homework, the environment (same room, same desk), and his level of tiredness before starting.

Answer:

a. Does listening to music improve or distract from Peter's homework - doing?
b. If Peter listens to music while doing homework, then he will do it better and faster.
c. Divide homework into two sets. Do one with music and one without. Time each and rate quality.
d. Presence or absence of music
e. Speed and quality of homework completion
f. Doing homework in silence
g. Type of homework, time of day, environment, level of tiredness