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Code Issues Projects Releases Packages Wiki Activity Actions 8

bpo-40855: Fix ignored mu and xbar parameters (GH-20835) (#GH-20862)

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Miss Islington (bot) 2020-06-13 16:56:15 -07:00 • committed by GitHub
parent bda4cc82de
commit 55c1d21761
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3 changed files with 18 additions and 2 deletions
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12
Lib/test/test_statistics.py
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@ -2089,6 +2089,10 @@ class TestVariance(VarianceStdevMixin, NumericTestCase, UnivariateTypeMixin):
self.assertEqual(result, exact)
self.assertIsInstance(result, Decimal)
def test_center_not_at_mean(self):
data = (1.0, 2.0)
self.assertEqual(self.func(data), 0.5)
self.assertEqual(self.func(data, xbar=2.0), 1.0)
class TestPStdev(VarianceStdevMixin, NumericTestCase):
# Tests for population standard deviation.
@ -2101,6 +2105,11 @@ class TestPStdev(VarianceStdevMixin, NumericTestCase):
expected = math.sqrt(statistics.pvariance(data))
self.assertEqual(self.func(data), expected)
def test_center_not_at_mean(self):
# See issue: 40855
data = (3, 6, 7, 10)
self.assertEqual(self.func(data), 2.5)
self.assertEqual(self.func(data, mu=0.5), 6.5)
class TestStdev(VarianceStdevMixin, NumericTestCase):
# Tests for sample standard deviation.
@ -2118,6 +2127,9 @@ class TestStdev(VarianceStdevMixin, NumericTestCase):
expected = math.sqrt(statistics.variance(data))
self.assertEqual(self.func(data), expected)
def test_center_not_at_mean(self):
data = (1.0, 2.0)
self.assertEqual(self.func(data, xbar=2.0), 1.0)
class TestGeometricMean(unittest.TestCase):