code: def test_naive_back_transformation(self):
      # test both transformations functions -> 0. and .5
      y_zero_lambda = self.bc.transform_boxcox(self.x, 0.0)
      y_half_lambda = self.bc.transform_boxcox(self.x, 0.5)
  
      y_zero_lambda_un = self.bc.untransform_boxcox(
          *y_zero_lambda, method="naive"
      )
      y_half_lambda_un = self.bc.untransform_boxcox(
          *y_half_lambda, method="naive"
      )
  
      assert_almost_equal(self.x, y_zero_lambda_un, 5)
      assert_almost_equal(self.x, y_half_lambda_un, 5)
  
file_path: statsmodels/statsmodels/base/tests/test_transform.py
imports: import numpy
  from numpy.testing import assert_almost_equal, assert_equal, assert_raises
  from statsmodels.base.transform import BoxCox
  from statsmodels.datasets import macrodata
label_desc: Use image node_id 11 for calling the TestTransform obj's underlying member method code with example usage: obj.test_naive_back_transformation() without return types