$3.$ Given the following table, calculate the Mean Absolute Deviation $($MAD$),$ Mean

Squared Error $($MSE$)$ and Mean Absolute Percentage Error $($MAPE$)$

Institutional Sectors

GDP $2022$

$($Actual$)$

Oil Sector

$15\mathrm{.}31$

Forecast

method $1$

Forecast

method $2$

Non$-$Oil Sector

$16\mathrm{.}2$

$5\mathrm{.}29$

$15\mathrm{.}23$

Government Sector

$6\mathrm{.}37$

$4\mathrm{.}44$

$6\mathrm{.}05$

Private Sector

$5\mathrm{.}82$

$5\mathrm{.}62$

$4\mathrm{.}85$

Gross Value Added

$6\mathrm{.}55$

$9\mathrm{.}16$

$6\mathrm{.}22$

Net Taxes on Products

$10\mathrm{.}12-3\mathrm{.}84$

$9\mathrm{.}82$

Gross Domestic Product $-3\mathrm{.}05-2\mathrm{.}74$

$8\mathrm{.}68$

$10\mathrm{.}14$

$3\mathrm{.}1$ Which one method has the largest deviation $($error$)?$

$3\mathrm{.}2$ Which one method has the best fit?