Forecast method

MAD

MAPE

Simple three$-$month moving average

Simple two$-$month moving average

Three$-$month weighted moving average with the weight of

$0\mathrm{.}7$ on the most recent period

Three$-$month weighted moving average with the weight of

$0\mathrm{.}2$ on the most recent period

Exponential smoothing with a smoothing constant of $0\mathrm{.}1$

Exponential smoothing with a smoothing constant of $0\mathrm{.}6$

$(10)$

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