[MATH-70] [math] Why are the methods of TTest not static?

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.0

Environment

Operating System: Linux
Platform: PC

• Bugzilla Id: 32663
• Assignee: Unassigned
• Reporter: Mary Ellen Foster
• Created: 13/Dec/04 22:56
• Updated: 23/Apr/09 02:26
• Resolved: 23/Apr/09 02:26

Description

To do T-tests on data – for which many thanks! – you currently have to do the
following

TTest tester = new TTestImpl();
tester.pairedTTest( ... );

There are two things that are inelegant about this implementation: you have to
explicitly call "new TTestImpl()" instead of using a factory method, and I don't
see why there's this whole interface-implementation paradigm at all. As far as I
can see, there's no state stored in the TTest implementation; why isn't it a
singleton class with static methods instead?