Year

$2019$

$2020$

$2021$

$2022$

$2023$

Forecast

$430$

$420$

$400$

$440$

$400$

Actual demand

$500$

$460$

$420$

$470$

$430$

$1)$ Find the forecast in $2024$ by the three$-$period moving average.

$2)$ Find the forecast in $2024$ by the Exponential Smoothing method. Use a smoothing constant of $0\mathrm{.}6.$

$3)$ Find tracking signals for all the years between $2019$ and $2023.$