code: def test_scalar(self):
      # scalar input -> scalar output
      assert_almost_equal(4.43645545899562, qsturng(0.9, 5, 6), 5)
  
imports: from statsmodels.compat.python import lzip, lmap
  from numpy.testing import assert_equal, assert_almost_equal, assert_array_almost_equal, assert_raises
  import numpy
  import pytest
  from statsmodels.stats.libqsturng import qsturng, psturng
label_desc: Use image node_id 1 for calling the TestQsturng obj's underlying member method code with example usage: obj.test_scalar() without return types