stdev#

stdev(close, length=None, ddof=None, talib=None, offset=None, **kwargs)[source]#

Rolling Standard Deviation

Sources:

Calculation:
Default Inputs:

length=30

VAR = Variance STDEV = variance(close, length).apply(np.sqrt)

Args:

close (pd.Series): Series of ‘close’s length (int): It’s period. Default: 30 ddof (int): Delta Degrees of Freedom.

The divisor used in calculations is N - ddof, where N represents the number of elements. Default: 1

talib (bool): If TA Lib is installed and talib is True, Returns the TA Lib

version. Default: True

offset (int): How many periods to offset the result. Default: 0

Kwargs:

fillna (value, optional): pd.DataFrame.fillna(value) fill_method (value, optional): Type of fill method

Returns:

pd.Series: New feature generated.