Testing for co-integration combines the problems of unit root tests and tests with parameters unidentified under the null. Seven statistics are formulated and analyzed.

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Opinion: Cox Media Group's Eric Dodson Greenberg writes that "Legal R&D," the process of continuously innovating on legal ...

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RoboForm is affordable, excels at core password management tasks, and includes lots of helpful tips, making it an excellent ...

Superintendent explores classroom tech balance: from dial-up to screen saturation, finding the sweet spot between digital tools and deep learning.