NARRBEGIN: Truck Speed & Gas Mileage
Truck Speed and Gas

Short Answer

NARRBEGIN: Truck Speed & Gas Mileage
Truck Speed and Gas Mileage
An economist wanted to analyze the relationship between the speed of a truck (x) and its gas mileage (y). As an experiment a truck is operated at several different speeds and for each speed the gas mileage is measured. These data are shown below. $$\begin{array} { | l | l l l l l l l | } \hline \text { Speed } & 25 & 35 & 45 & 50 & 60 & 65 & 70 \\\hline \text { Gas Mileage } & 40 & 39 & 37 & 33 & 30 & 27 & 25 \\\hline\end{array}$$ NARREND
-{Car Speed and Gas Mileage Narrative} Calculate the Pearson coefficient of correlation.