class_docstr: Binomial Distribution 
class_docstr_tok: ["Binomial","Distribution"]
docstr: Returns variance 
code: def get_variance(self):
      """Returns variance"""
      return self.n * self.p * (1 - self.p)
  
imports: from __future__ import absolute_import
  import numpy
  from .distribution import Discrete
  from ..exd import domains
label_desc: Use image node_id 7 for calling the Binomial obj's underlying member method code with example usage: obj.get_variance() and returns: unknown