pandas.rolling_var¶
- pandas.rolling_var(arg, window, min_periods=None, freq=None, center=False, time_rule=None, **kwargs)¶
Unbiased moving variance
Parameters : arg : Series, DataFrame
window : Number of observations used for calculating statistic
min_periods : int
Minimum number of observations in window required to have a value
freq : None or string alias / date offset object, default=None
Frequency to conform to before computing statistic time_rule is a legacy alias for freq
Returns : y : type of input argument