Question

interpreting scatter plot & line of best fit
a running club collected data on how long it takes runners to complete different distances. they recorded the distance (in miles) and the time (in minutes) it took to finish. the data were plotted on a scatter plot, and a trend line was fit to the data.
for a 6 - mile run (indicated by the arrow), the trend line ______ (responses: overpredicts, underpredicts, is an exact prediction) the amount of time it will take to complete the run.

Explanation:

Step1: Analyze the scatter - plot and line of best fit relationship

In a scatter - plot with a line of best fit, if a data point (in this case, the 6 - mile run data point) lies below the line of best fit, the line of best fit overpredicts the value. If it lies above, the line underpredicts. If it lies on the line, it is an exact prediction.

Looking at the 6 - mile run (the data point marked as 6 - mile run in the scatter - plot), we observe that the actual data point (the cross - mark for 6 - mile run) is below the trend line.

Answer:

overpredicts