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Time series variables fail to be stationary when
Declaration Of War
A formal statement issued by a national government indicating that a state of war exists between it and another nation.
United Nations
An international organization formed in 1945 to promote peace, security, and cooperation among the world's nations through diplomacy and dialogue.
Performance Impossible
A legal concept where the fulfillment of contractual obligations becomes impossible due to unforeseeable circumstances.
Running Errands
Performing minor tasks or acquiring items outside of the home, often involving travel from one place to another.
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