Question

"3. Select all the relationships that demonstrate a negative association between variables.

• Miles you drive and the amount of gas in your tank.
• The number of miles you ran over time.
2 Craine.e The level of water in a water tank being drained over time.
wiver da The speed of a train at a constant speed over the next 6 hours. heigh. Number of cups in a stack and the stack height.

Answer 1

Answer(s):

- miles you drive and the amount of gas in your tank

- the level of water in a water tank being drained over time

Explanation:

1. The more miles that you drive, the less gas that is in your tank, so this one has a negative association between its variables.

2. The more time you spend running, the more miles you'll have ran, so that's a positive association, not a negative association.

3. The longer a water tank is drained, the less water it'll have in it, so this one has a negative association between its variables.

4. The speed of a train at a constant speed over the next 6 hours can be modeled by a graph with a horizontal line (which has a slope of zero), representing that as the x increases, the y does not change, so there is not a negative association between the variables.

5. The more cups in the stack, the taller it will be, so that's a positive association, not a negative association.