The General Manager of a Chain of Furniture Stores Believes

The general manager of a chain of furniture stores believes that experience is the most important factor in determining the level of success of a salesperson.To examine this belief she records last month's sales (in $1,000s)and the years of experience of 10 randomly selected salespeople.These data are listed below.
$$\begin{array} { | c | c | c | } \hline \text { Sallepersan } & \text { Yeare af Experience } & \text { Salez } \\\hline 1 & 0 & 7 \\\hline 2 & 2 & 9 \\\hline 3 & 10 & 20 \\\hline 4 & 3 & 15 \\\hline 5 & 8 & 18 \\\hline 6 & 5 & 14 \\\hline 7 & 12 & 20 \\\hline σ & 7 & 17 \\\hline 9 & 20 & 30 \\\hline 10 & 15 &25\\\hline\end{array}$$ Draw a scatter diagram of the data to determine whether a linear model appears to be appropriate.