code: def test_iqr(self):
      m = scale.iqr(self.X)
      assert_equal(m.shape, (10,))
  
imports: import numpy
  from numpy.random import standard_normal
  from numpy.testing import assert_almost_equal, assert_equal
  import pytest
  from scipy.stats import norm
  import statsmodels.api
  import statsmodels.robust.scale
  from statsmodels.robust.scale import mad
label_desc: Use image node_id 2 for calling the TestIqr obj's underlying member method code with example usage: obj.test_iqr() without return types