| TRIAL | NO MUSIC | CLARINET | FLUTE | |---|---|---|---| | 1 | 5 | 15 | 5 | | 2 | 3 | 10 | 8 | | 3 | 2 | 12 | 9 | 18. What is the independent variable? a. Number of jellyfish. b. Instrument. c. Length the music was played. d. The song he played. 19. What is the dependent variable? a. Number of jellyfish. b. Instrument. c. Length the music was played. d. The song he played. 20. What should Squidward's conclusion be? a. The clarinet and guitar attracted the same number of jellyfish. b. The flute attracted more fish than the control (no music). c. Music attracts more jellyfish than does no music. d. All of the above.
Answer (1)
Let's break down the questions to better understand the experiment and find the correct answers.
18. What is the independent variable?
The independent variable is the factor that is changed or controlled in a scientific experiment to test the effects on the dependent variable. In this context, the independent variable is the different types of music being played because this is what Squidward is changing to observe its effect on the number of jellyfish attracted. Therefore, the correct answer is:
b. Instrument.
19. What is the dependent variable?
The dependent variable is the variable being tested and measured in an experiment. In this case, it is the number of jellyfish because Squidward wants to see how it changes in response to the music being played. Therefore, the correct answer is:
a. Number of jellyfish.
20. What should Squidward's conclusion be?
Let’s analyze the data provided in the table:
No Music : Average attraction over trials = 3 5 + 3 + 2 = 3.33
Clarinet : Average attraction over trials = 3 15 + 10 + 12 = 12.33
Flute : Average attraction over trials = 3 5 + 8 + 9 = 7.33
From the data and averages:
The clarinet attracted more jellyfish than both the flute and the no music control.
The flute attracted more jellyfish than the control (no music).
Based on these observations, it's clear that playing music (clarinet or flute) attracts more jellyfish than no music at all. Thus, Squidward's conclusion should be:
c. Music attracts more jellyfish than does no music.
