Standard Deviation (StdDev)

Description

In probability theory and statistics, standard deviation is a measure of the variability or dispersion of a population, a data set, or a probability distribution. A low standard deviation indicates that the data points tend to be very close to the same value (the mean), while high standard deviation indicates that the data are “spread out” over a large range of values.

… Courtesy of Wikipedia

Syntax

StdDev(int period)

StdDev(ISeries\<double\> input, int period)

Returns default value

StdDev(int period)[int barsAgo]

StdDev(ISeries\<double\> input, int period)[int barsAgo]

Return Value

double; Accessing this method via an index value [int barsAgo] returns the indicator value of the referenced bar.

Parameters

Examples

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// Prints the current value of a 20 period **StdDev** using default price type
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double value = StdDev(20)[0];
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Print("The current **StdDev** value is " + value.ToString());
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// Prints the current value of a 20 period **StdDev** using high price type
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double value = StdDev(High, 20)[0];
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Print("The current **StdDev** value is " + value.ToString());

Source Code

You can view this indicator method source code by selecting the menu New > NinjaScript Editor > Indicators within the NinjaTrader Control Center window.