code: def test_matrix_std_argmax(self):
      # Ticket #83
      x = np.asmatrix(np.random.uniform(0, 1, (3, 3)))
      assert_equal(x.std().shape, ())
      assert_equal(x.argmax().shape, ())
  
imports: import numpy
  from numpy.testing import assert_, assert_equal, assert_raises
label_desc: Use image node_id 4 for calling the TestRegression obj's underlying member method code with example usage: obj.test_matrix_std_argmax() without return types