Complete the Table with the Values of the 3-Unit Moving

Multiple Choice

Complete the table with the values of the 3-unit moving average of the given function: $$\begin{array} { | l | l | l | l | l | l | l | l | } \hline \boldsymbol { x } & 1 & 2 & 3 & 4 & 5 & 6 & 7 \\\hline \boldsymbol { r } ( \boldsymbol { x } ) & 2 & 1 & 6 & 8 & 1 & 3 & 8 \\\hline \text { average } & \text { undefined } & \text { undefined } & & & & & \\\hline\end{array}$$

A) $\begin{array} { | l | l | l | l | l | l | l | l | } \hline \boldsymbol { x } & 1 & 2 & 3 & 4 & 5 & 6 & 7 \\\hline \boldsymbol { r } ( \boldsymbol { x } ) & 2 & 1 & 6 & 8 & 1 & 3 & 8 \\\hline \text { average } & \text { undefined } & \text { undefined } & 4 & 3 & 5 & 5 & 4 \\\hline\end{array}$

B) $\begin{array} { | l | l | l | l | l | l | l | l | } \hline \boldsymbol { x } & 1 & 2 & 3 & 4 & 5 & 6 & 7 \\\hline \boldsymbol { r } ( \boldsymbol { x } ) & 2 & 1 & 6 & 8 & 1 & 3 & 8 \\\hline \text { average } & \text { undefined } & \text { undefined } & 3 & 5 & 5 & 4 & 4 \\\hline\end{array}$

C) $\begin{array} { | l | l | l | l | l | l | l | l | } \hline \boldsymbol { x } & 1 & 2 & 3 & 4 & 5 & 6 & 7 \\\hline \boldsymbol { r } ( \boldsymbol { x } ) & 2 & 1 & 6 & 8 & 1 & 3 & 8 \\\hline \text { average } & \text { undefined } & \text { undefined } & 5 & 5 & 4 & 4 & 3 \\\hline\end{array}$