def test_errors(self):
with pytest.raises(ValueError):
var(self.f, 'NA')
ff = np.array([np.array(self.f), np.array(self.f)])
with pytest.raises(ValueError):
var(ff)
def test_var_standard_two_pass(self):
assert_allclose(np.array(var(self.f, 'standard two pass')).reshape(4,),
np.array([2, 2.25, 0.666667, 2]), rtol=1e-02)
assert_allclose(np.array(var(self.h, 'standard two pass')).reshape(4,),
np.array([32, 9, 3.666667, 17]), rtol=1e-02)
assert_equal(var(self.fa[:, 1], 'standard two pass'), 2.25)
def test_var_youngs_cramer(self):
assert_allclose(np.array(var(self.f, 'youngs cramer')).reshape(4,),
np.array([2, 2.25, 0.666667, 2]), rtol=1e-02)
assert_allclose(np.array(var(self.h, 'youngs cramer')).reshape(4,),
np.array([32, 9, 3.666667, 17]), rtol=1e-02)
assert_equal(var(self.fa[:, 1], 'youngs cramer'), 2.25)
def test_var_textbook_one_pass(self):
assert_allclose(np.array(var(self.f, 'textbook one pass')).reshape(4,),
np.array([2, 2.25, 0.666667, 2]), rtol=1e-02)
assert_allclose(np.array(var(self.h, 'textbook one pass')).reshape(4,),
np.array([32, 9, 3.666667, 17]), rtol=1e-02)
assert_almost_equal(var(self.fa[:, 2], 'textbook one pass'), 0.66666666666666663)
def test_var_corrected_two_pass(self):
np.testing.assert_allclose(np.array(var(self.f)).reshape(4, ),
np.array([2, 2.25, 0.666667, 2]),
rtol=1e-02)
np.testing.assert_allclose(np.array(var(self.f,
'corrected two pass')).reshape(
4, ),
np.array([2, 2.25, 0.666667, 2]),
rtol=1e-02)
np.testing.assert_allclose(var(self.h).reshape(4, ),
np.array([32, 9, 3.666667, 17]),
rtol=1e-02)
