Original Project
Control of Variables
Item CV004003: An experiment in which the number of fish in a series of fish bowls is held constant and the temperature of the water in the fish bowls is varied could tell you the effect that water temperature has on the behavior of goldfish.
A student wants to find out if temperature affects the behavior of goldfish. He has four fish bowls and 20 goldfish. Which of the following experiments should he do?
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 2559 |
6–8 n = 1383 |
9–12 n = 1162 |
Male n = 1255 |
Female n = 1282 |
English n = 2205 |
Other n = 315 |
||
| A. |
 |
4% | 4% | 4% | 4% | 4% | 4% | 5% |
| B. |
 |
9% | 12% | 5% | 9% | 8% | 8% | 12% |
| C. |
 |
74% | 66% | 83% | 72% | 75% | 75% | 67% |
| D. |
 |
14% | 18% | 9% | 15% | 13% | 14% | 16% |