Predictor uses the following equations for the double moving average method:
(Level) Lt = 2 * Mt – Mt'
(Trend)
(Fit) Ft = Lt-1 + Tt-1
(Forecast for period m) Ft+m = Lt + m*Tt
Where the parameters are:
p—Order of moving average
Mt—First order moving average for period t
Mt'—Second order moving average for period t
Note: | First fit is available from period (2*p-1). |