In a study on speed control, it was found that the main reasons for regulations were to make traffic flow more efficient and to minimize the risk of danger. An area that was
focused on in the study was the distance required to completely stop a vehicle at various speeds. Use the following table to answer the questions.

Assume MPH is going to be used to predict stopping distance

Construct a scatter plot for the data.

Is there a linear relationship between the two variables?

Redraw the scatter plot, and change the distances between the independent-variable numbers. Does
the relationship look different?

Compute the value of r.


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