some new features

.venv/lib/python3.12/site-packages/statsmodels/stats/tests/test_qsturng.py

@@ -0,0 +1,28 @@
+"""
+
+Created on Wed Mar 28 13:49:11 2012
+
+Author: Josef Perktold
+"""
+
+import pytest
+import numpy as np
+from numpy.testing import assert_almost_equal
+
+from statsmodels.stats.libqsturng import qsturng, psturng
+from statsmodels.sandbox.stats.multicomp import get_tukeyQcrit
+
+
+@pytest.mark.parametrize('alpha', [0.01, 0.05])
+@pytest.mark.parametrize('k', np.arange(2, 11))
+def test_qstrung(alpha, k):
+    rows = [5,    6,    7,    8,    9,   10,   11,   12,   13,   14,   15,
+            16,   17,   18,   19,   20,   24,   30,   40,   60,  120, 9999]
+
+    c1 = get_tukeyQcrit(k, rows, alpha=alpha)
+    c2 = qsturng(1 - alpha, k, rows)
+    assert_almost_equal(c1, c2, decimal=2)
+    # roundtrip
+    assert_almost_equal(psturng(qsturng(1 - alpha, k, rows), k, rows),
+                        alpha,
+                        5)