which scatter plot shows a positive linear association?

Explanation:

Step1: Recall positive - linear - association concept

In a scatter - plot with positive linear association, as the x - values increase, the y - values tend to increase in a linear (more or less in a straight - line) fashion.

Step2: Analyze each scatter - plot

In the first scatter - plot, as x increases, y decreases, which is a negative association. In the second scatter - plot, there is no clear linear pattern. In the third scatter - plot, there is no clear linear pattern either. In the fourth scatter - plot, as x increases, y generally increases in a somewhat linear way.

Answer:

The fourth scatter - plot.