Practice!

Sample Problem

Based on the following scatter plot, which shows the number y of candy stores in Wooville for each year x from 2000 through 2007, pick the number that best predicts the number of candy stores in Wooville in 2008.

 

 

Solution

Looking at the general trend of this scatterplot, every year the number of candy stores in Wooville increases by a few hundred. In 2007, there are around 7300 candy stores in Wooville; therefore, based on our options, our best prediction for the number of candy stores in 2008 (a year later) is 7850 7900.