#$10$

Using the data below, calculate the squared error for the $4$ th week. Use the $2$ period moving average to create the forecast.

$\backslash$table$[[$Week$,$Time Series Value$],[1,8\mathrm{.}00],[2,6\mathrm{.}00],[3,14\mathrm{.}00]]$

Answer format: Number: Round to: $1$ decimal places.