Chapter Review
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What does it mean that one variable depends on the other variable?
independent variable
We are asked to complete the given sentence.
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If the value of a changes in response to the value of b, then b is the ?. |
We are told that one variable changes in response to the other variable. Let's consider the relationship between the number of saved photos b and the amount of memory a in megabytes left on SD card.
| Camera Memory | |
|---|---|
| Number of Photos, b | Memory (MB), a |
| 0 | 1024 |
| 1 | 1020 |
| 2 | 1017 |
| 3 | 1014 |
| 4 | 1010 |
Note that the more photos we take, the less memory is left. Therefore, the amount of memory left is determined by the number of photos we take. In other words, b depends on a. This means that b is the independent variable and a is the dependent variable. Finally, we can complete the sentence.
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If the value of a changes in response to the value of b, then b is the independent variable. |