scipy.stats.Normal.
variance#
- Normal.variance(*, method=None)[source]#
- Variance (central second moment) - Parameters:
- method{None, ‘formula’, ‘transform’, ‘normalize’, ‘quadrature’, ‘cache’}
- Method used to calculate the central second moment. Not all methods are available for all distributions. See - momentfor details.
 
 - See also - References [1]- Variance, Wikipedia, https://en.wikipedia.org/wiki/Variance#Absolutely_continuous_random_variable - Examples - Instantiate a distribution with the desired parameters: - >>> from scipy import stats >>> X = stats.Normal(mu=1., sigma=2.) - Evaluate the variance: - >>> X.variance() 4.0 >>> X.variance() == X.moment(order=2, kind='central') == X.sigma**2 True