$1)$ Go Slow Forecasting

Year $1234567891011$

Demand $795913812139117$

$$ Starting in year $4$ and going to year $12,$ forecast demand using a $3-$year moving average. Plot your forecast on the same graph as the original data.

$$ Starting in year $4$ and going to year $12,$ forecast demand using a $3-$year moving average with weights of $0\mathrm{.}1,0\mathrm{.}3,$ and $0\mathrm{.}6,$ using $0\mathrm{.}6$ for the most recent year. Plot this forecast on the same graph.