Python ExponentialDistribution示例

示例#1

 def testmedian(self):
     p = N.ExponentialDistribution(location=0.0, scale=1.0).median()
     self.assertAlmostEqual(p, 0.30103, places=4)

示例#2

 def testvariance(self):
     p = N.ExponentialDistribution(location=0.0, scale=1.0).variance()
     self.assertAlmostEqual(p, 1.0, places=4)

示例#3

 def testCDF3(self):
     p = N.ExponentialDistribution(location=1.0, scale=1.0).CDF(0.0)
     self.assertAlmostEqual(p, -1.7182818, places=4)

示例#4

 def testPDF2(self):
     p = N.ExponentialDistribution(location=0.0, scale=1.0).PDF(1.0)
     self.assertAlmostEqual(p, 0.3679, places=4)

示例#5

 def testCDF2(self):
     p = N.ExponentialDistribution(location=0.0, scale=1.0).CDF(2.0)
     self.assertAlmostEqual(p, 0.86466, places=4)