BestModelChiSquared

BestModelChiSquared(*args)

Select the best model according to the \chi^2 goodness-of-fit test.

Parameters
sample2-d sequence of float

Tested sample.

modelslist of Distribution or DistributionFactory

Tested distributions.

Returns
best_modelDistribution

The distribution that fits the sample best according to the test. This may raise a warning if the best model does not perform well.

best_resultTestResult

Best test result.

See also

FittingTest.ChiSquared

Examples

>>> import openturns as ot
>>> ot.RandomGenerator.SetSeed(0)
>>> distribution = ot.Poisson()
>>> sample = distribution.getSample(30)
>>> tested_distributions = [ot.PoissonFactory(), ot.UserDefinedFactory()]
>>> best_model, best_bic = ot.FittingTest.BestModelBIC(sample, tested_distributions)
>>> print(best_model)
Poisson(lambda = 1.06667)