### Home > ACC7 > Chapter 8 Unit 9 > Lesson CC3: 8.2.4 > Problem 8-111

8-111.

For the following examples, tell whether there is positive association, negative association, or no association.

The number of inches of rain per hour and the height of water in a reservoir.

As the amount of rain fall increases, the height of water in a reservoir increases.

Positive association.

The amount of food a person eats and how many pets he or she has.

No association.

The height of a tree and the amount of nutrients it gets.

The more nutrients a tree gets, the more it will grow.

The number of hours spent hiking in the mountains and the amount of water left in your water bottle.

The longer you hike, the less water you will have in your bottle.