class_docstr: Class for Multivariate Normal Distribution
  
  uses Cholesky decomposition of covariance matrix for the transformation
  of the data
class_docstr_tok: ["Class","for","Multivariate","Normal","Distribution","uses","Cholesky","decomposition","of","covariance","matrix","for","the","transformation","of","the","data"]
docstr: covariance matrix
code: def cov(self):
      """covariance matrix"""
      return self.sigma
  
imports: import numpy
  from scipy import special
  from statsmodels.sandbox.distributions.multivariate import mvstdtprob
  from .extras import mvnormcdf
label_desc: Use image node_id 4 for calling the MVNormal obj's underlying member method code with example usage: obj.cov() and returns: self