class_docstr: Get marginal effects of a Discrete Choice model.
  
  Parameters
  ----------
  results : DiscreteResults instance
      The results instance of a fitted discrete choice model
  args : tuple
      Args are passed to `get_margeff`. This is the same as
      results.get_margeff. See there for more information.
  kwargs : dict
      Keyword args are passed to `get_margeff`. This is the same as
      results.get_margeff. See there for more information.
code: def tvalues(self):
      _check_at_is_all(self.margeff_options)
      return self.margeff / self.margeff_se
  
imports: from statsmodels.compat.python import lzip
  import numpy
  from scipy.stats import norm
  from statsmodels.tools.decorators import cache_readonly
label_desc: Use image node_id 3 for calling the DiscreteMargins obj's underlying member method code with example usage: obj.tvalues() and returns: unknown