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Simple Moving Average (SMA) Explained. A simple moving average (SMA) is the simplest type of moving average in forex analysis (DUH!). Basically, a simple moving average is calculated by adding up the last âXâ periodâs closing prices and then dividing that number by X.
The Weighted Moving Average places more importance on recent price moves; therefore, the Weighted Moving Average reacts more quickly to price changes than the regular Simple Moving Average (see: Simple Moving Average). A basic example (3-period) of how the Weighted Moving Average is calculated is presented below: Prices for the past 3 days have been $5, $4, and $8. 2  Since there are 3 periods, the most recent day ($8) gets a weight of 3, the second recent day ($4) receives a weight of 2, and the last day of the 3-periods ($5) receives a weight of just one.