Average True Range indicator provides a measure of price volatility. Originally developed by J. Welles Wilder for use in commodity markets but the ATR indicator works just as well when applied to stocks or indices.


atrArray[] = Sum(Array[n=0...n=range-1](Max(Abs(Low-Close[-1], Max(High-Low, Abs(High-Close[-1])))))) / range


Average True Range indicator is applied in scenarios where volatility of underlying security needs to be measured.

inteliCharts - Average True Range
inteliCharts Predictive Analytics - Calculating Most Probable Future Stock Prices
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