Use the applet "Moving Averages" to answer the following questions.

$($a$)$

Out of the three methods, "Naive Forecast," "Moving Average", and "Weighted Moving Average," which produces a smaller mean absolute error?

Naive Forecast

Moving Average

Weighted Moving Average

none of the above

$($b$)$

Which method produces the smallest mean squared error?

Naive Forecast

Moving Average

Weighted Moving Average

none of the above