On 02/05/2012 08:14 PM, Gilles Sadowski wrote: > Maybe I'm mistaken but it seems that you think that the "...Test" classes in > package "stat.inference" are somehow utilities for the CM unit tests (as is > actually the case for the "TestUtils" class) or some base class for CM unit > tests (?). That's not the case. > The name "ChiSquareTest" is the name of a "statistic test" (not a unit test > for a "ChiSquare" functionality): > http://en.wikipedia.org/wiki/Chi-squared_test > > The class may be used in the CM's unit testing framework but that does not > imply that it should be tailored to do just that; it is useful on its own, > as any other functionality available in CM.
No, I am not referring to a unit test. There is really a TestUtils class in the stat.inference package (see also the tutorial) that provides access to the different statistical test implementations (like ChiSquare). > [Sorry if I misunderstood what you were saying; in which case I did not get > it...] I wanted to say that in most cases people will use a statistical test in such a way: TestUtils.chiSquareTest(expected, observed); which is btw how it is described in the tutorial. If this is the case, and as the tests itself are state-less, all of them can be implemented as pure functions -> static methods There is no need to instantiate an instance of, e.g. ChiSquareTest to call the appropriate method. Hope this makes my argument clearer. Thomas --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org
