EXAMPLE 3 Characterize the relationship between two variables using a scatterplot

Using Figure 1 on page 189, characterize the relationship between lot square footage and lot price.

Solution

The scatterplot in Figure 1 most resembles Figure 2 on page 191, where a positive linear relationship exists between the variables. Thus, smaller lot sizes tend to be associated with lower prices, and larger lot sizes tend to be associated with higher prices. Put another way, as the lot size increases, the lot price also tends to increase.