In a Study of Feeding Behavior, Zoologists Recorded the Number

Essay

In a study of feeding behavior, zoologists recorded the number of grunts of a warthog feeding by a lake in the 15 minute period following the addition of food. The data showing the number of grunts and and the age of the warthog (in days) are listed below: $$\begin{array} { c c } \hline \text { Number of Grunts } & \text { Age (days) } \\\hline 88 & 123 \\66 & 139 \\37 & 153 \\42 & 158 \\61 & 165 \\38 & 172 \\60 & 181 \\15 & 187 \\18 & 193 \\\hline\end{array}$$ Find and interpret the value of r.