Moving Average Trend of Forecasting
A centered moving average (MA) is obtained by summing and averaging the values from a given number of periods repetitively, each time deleting the oldest value and adding a new value.
MA = ∑x/ Number of Period
A weighted moving average (MAw) allows some values to be emphasized by varying the weights assigned to each component of the average. Weights can be either percentages or a real number.
MAwt = ∑ (Wt)/∑Wt
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