Use This Information to Answer the Following Questions -Refer to the Table Above

Use this information to answer the following questions.
A hot dog stand owner has collected the following time series data on the number of hot dogs sold over the last 12 quarters.
$$\begin{array} { | c | c | c | } \hline \text { Year } & \text { Quarter } & \text { Demand } \\\hline 1 & \text { Winter } & 29 \\\hline 1 & \text { Spring } & 65 \\\hline 1 & \text { Summer } & 56 \\\hline 1 & \text { Fall } & 45 \\\hline 2 & \text { Winter } & 23 \\\hline 2 & \text { Spring } & 57 \\\hline 2 & \text { Summer } & 48 \\\hline 2 & \text { Fall } & 32 \\\hline 3 & \text { Winter } & 14 \\\hline 3 & \text { Spring } & 55 \\\hline 3 & \text { Summer } & 52 \\\hline 3 & \text { Fall } & 25 \\\hline\end{array}$$
-Refer to the table above.
a.Prepare a line graph of the time series data.
b.Do the data appear to be stationary or non-stationary?

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b.Data appears to be non-s...

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