Question: please help as fast as you can the two question please 20 If two variables have negative perfect correlation, the correlation coefficient would equal?

please help as fast as you can

the two question please

20 If two variables have negative perfect correlation, the correlation coefficient "" would equal? (1 Point) Enter your answer 21 We usually define operations Research as: * (1 Point) O A logical approach to decision making A rational approach to decision making A scientific approach to decision making All of the above

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