provided, calculations may be more likely to meet the desired accuracy. validation_policy : {None, "skip_all"} Specifies the level of input validation to perform. Left unspecified, input validation is performed to ensure appropriate behavior in edge case (e.g. parameters out of domain, argument outside of distribution support, etc.) and improve consistency of output dtype, shape, etc. Pass ``'skip_all'`` to avoid the computational overhead of these checks when rough edges are acceptable. cache_policy : {None, "no_cache"} Specifies the extent to which intermediate results are cached. Left unspecified, intermediate results of some calculations (e.g. distribution support, moments, etc.) are cached to improve performance of future calculations. Pass ``'no_cache'`` to reduce memory reserved by the class instance. Attributes ---------- All parameters are available as attributes. Methods ------- support plot sample moment mean median mode variance standard_deviation skewness kurtosis pdf logpdf cdf icdf ccdf iccdf logcdf ilogcdf logccdf ilogccdf entropy logentropy See Also -------- :ref:`rv_infrastructure` : Tutorial Notes ----- The following abbreviations are used throughout the documentation. - PDF: probability density function - CDF: cumulative distribution function - CCDF: complementary CDF - entropy: differential entropy - log-*F*: logarithm of *F* (e.g. log-CDF) - inverse *F*: inverse function of *F* (e.g. inverse CDF) The API documentation is written to describe the API, not to serve as a statistical reference. Effort is made to be correct at the level required to use the functionality, not to be mathematically rigorous. For example, continuity and differentiability may be implicitly assumed. For precise mathematical definitions, consult your preferred mathematical text. rz