Management Is Concerned That Workers Create More Product Defects at the Very

Management is concerned that workers create more product defects at the very beginning and end of a work shift than at other times of their eight hour workday. Construct a scatter diagram with the following data, collected last week. Is management justified in its belief?
$$\begin{array} { | l | l | l | l | l | l | } \hline & { \text { Number of Defects } } \\\hline & \text { Monday } & \text { Tuesday } & \text { Wednesday } & \text { Thursday } & \text { Friday } \\\hline \text { First hour at work } & 12 & 9 & 6 & 8 & 7 \\\hline \text { Second hour at work } & 6 & 5 & 3 & 4 & 5 \\\hline \text { Third hour at work } & 5 & 2 & 4 & 3 & 3 \\\hline \text { Fourth hour at work } & 4 & 0 & 5 & 2 & 3 \\\hline \text { Fifth hour at work } & 1 & 6 & 2 & 4 & 5 \\\hline \text { Sixth hour at work } & 4 & 3 & 3 & 2 & 1 \\\hline \text { Seventh hour at work } & 7 & 4 & 4 & 6 & 3 \\\hline \text { Eighth hour at work } & 5 & 7 & 8 & 5 & 9 \\\hline\end{array}$$