Question: 21 If two variables have negative perfect correlation, the correlation coefficient r would equal? (1 Point) Enter your answer --means that the total of all

21 If two variables have negative perfect

21 If two variables have negative perfect correlation, the correlation coefficient "r" would equal? (1 Point) Enter your answer --means that the total of all activities equals the sum of the individual activities." (1 Point) Additivity Divisibility Proportionality Non-negativity Which of the following models are associated with the use of OR? (1 Point Schematic models Physical models Mathematical models Scale models

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