A manager has been using a certain technique to forecast demand for units of web publishing software for the past six periods. Actual and predicted forecasts are shown below.$$ The manager is wondering if a naive forecast method would have produced better results?$$ Use both MAD and MSE to justify your decision. $(5$ points$).$

$$Period $$Demand $$Forecast

$19087$

$28588$

$39187$

$49289$

$59590$

$68892$