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# cogent.maths.stats.test.ks_test

All Samples(20)  |  Call(18)  |  Derive(0)  |  Import(2)

```#!/usr/bin/env python
from cogent.util.unit_test import TestCase, main
from cogent.maths.stats.ks import pkolmogorov1x, pkolmogorov2x, pkstwo,\
psmirnov2x
from cogent.maths.stats.test import ks_test, ks_boot
```
```    def test_ks2x(self):
"""KS two-sample, 2-sided should match answers from R"""
D, Pval = ks_test(self.x1, self.x2)
self.assertFloatEqual((D, Pval), (0.46, 3.801e-05), eps=1e-4)
D, Pval = ks_test(self.x1, self.x2, exact=False)
self.assertFloatEqual((D, Pval), (0.46, 5.084e-05), eps=1e-4)
D, Pval = ks_test(self.x1, self.x2[:20])
self.assertFloatEqual((D,Pval), (0.53, 0.0003576), eps=1e-4)
D, Pval = ks_test(self.x2[:20], self.x1)
```

```#!/usr/bin/env python
from cogent.util.unit_test import TestCase, main
from cogent.maths.stats.ks import pkolmogorov1x, pkolmogorov2x, pkstwo,\
psmirnov2x
from cogent.maths.stats.test import ks_test, ks_boot
```
```    def test_ks2x(self):
"""KS two-sample, 2-sided should match answers from R"""
D, Pval = ks_test(self.x1, self.x2)
self.assertFloatEqual((D, Pval), (0.46, 3.801e-05), eps=1e-4)
D, Pval = ks_test(self.x1, self.x2, exact=False)
self.assertFloatEqual((D, Pval), (0.46, 5.084e-05), eps=1e-4)
D, Pval = ks_test(self.x1, self.x2[:20])
self.assertFloatEqual((D,Pval), (0.53, 0.0003576), eps=1e-4)
D, Pval = ks_test(self.x2[:20], self.x1)
```