code: def test_itsmr():
      # Note: apparently itsmr automatically demeans (there is no option to
      # control this)
      endog = lake.copy()
  
      check_itsmr(endog)  # Pandas series
      check_itsmr(endog.values)  # Numpy array
      check_itsmr(endog.tolist())
  
file_path: statsmodels/statsmodels/tsa/arima/estimators/tests/test_durbin_levinson.py
imports: import numpy
  import pytest
  from numpy.testing import assert_allclose, assert_raises
  from statsmodels.tsa.innovations.arma_innovations import arma_innovations
  from statsmodels.tsa.arima.datasets.brockwell_davis_2002 import dowj, lake
  from statsmodels.tsa.arima.estimators.durbin_levinson import durbin_levinson
label_desc: Use image node_id 3 for calling a global function with example usage: test_itsmr() without return types