The data below is 13 observations of Math SAT scores (x) and scores on Math placement test (y). Calculate the linear correlation coefficient, rr. Enter your answers to two decimal places. X Y 600 659 510 443 490 462 570 539 540 504 480 435 450 394 460 477 500 441 590 520 400 467 580 653 560 546 r=

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