Syntax

talib.STDDEV

Calculates the Standard Deviation.


    
    
    
talib.STDDEV(inReal)


    
    
    
talib.STDDEV(inReal, optInTimePeriod)


    
    
    
talib.STDDEV(inReal, optInTimePeriod, optInNbDev)

Examples

Compute the Standard Deviation from the latest K-lines.

javascript
python


    javascript
    
    
function main() {
    var records = exchange.GetRecords()
    if (!records) return
    var ret = talib.STDDEV(records)
    Log(ret)
}


    python
    
    
import talib
def main():
    records = exchange.GetRecords()
    if not records:
        return
    ret = talib.STDDEV(records.Close)
    Log(ret)

Returns

Type	Description
numeric array	Indicator values, the same length as the input; the leading values without enough data are `NaN`.

Arguments

Name	Type	Required	Description
inReal	`Record` array / numeric array	Yes	K-line array (close prices are used) or numeric array; in Python, pass a numeric array such as `records.Close`.
optInTimePeriod	number	No	Calculation period. Default `5`.
optInNbDev	number	No	Number of deviations. Default `1`.