Force index
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The Force Index (FI) is an indicator used in technical analysis to illustrate how strong the actuall buying or sellign pressure is. High positive values mean there is a strong rising trend, and low values signify a strong downward trend.
The FI is calculated by multiplying the difference between the last and previous closing prices by the volume of the commodity, yielding a momentum scaled by the volume. The strength of the force is determined by a larger price change or by a larger volume.