An analyst must decide between two different forecasting techniques for weekly sales of roller blades: a linear trend equation and the naive approach. The linear trend equation is Ft $=123+1\mathrm{.}9$t$,$ and it was developed using data from periods $1$ through $10.$ Based on data for periods $11$ through $20$ as shown in the table, which of these two methods has the greater accuracy if MAD and MSE are used? $($Round your intermediate calculations and final answers to $2$ decimal places.$)$t Units Sold

$11143$

$12148$

$13150$

$14145$

$15155$

$16149$

$17156$

$18159$

$19158$

$20163$