std_dev
Function Name: std_dev
Tags: Statistics
Category: Volatility
The Standard Deviation indicator is a statistical measurement of volatility. It is derived by calculating an n-time period Simple Moving Average of the data item; summing the squares of the difference between the data item and its Moving Average over each of the preceding n-time periods; dividing this sum by n and calculating the square root of this result.
Standard deviation is a statistical concept that illustrates how a specific set of values spread around an average value. This statistical tool is used in several analysis techniques such as Bollinger Bands.
Link: http://www.investopedia.com/terms/s/standarddeviation.asp
period |
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Default Value: 5 | Minimum: 1 | Maximum: 9999 |
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Type: Numeric |
SampleMethod |
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Default Value: 0 |
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Type: Boolean |