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The following table lists the math SAT scores for 72 stu- dents. These data can also be found in the excel file math SAT scores.xlsx 33 586 621 613 493 552 449 559 672 428 409 571 449 498 457 578 369 511 726 566 412 795 382 607 701 739 359 354 517 384 196 496 515 439 493 508 535 507 509 428 612 530 556 660 576 626 522 515 374 190 601 499 593 538 509 450 690 571 252 599 362 505 555 323 519 524 281 580 412 553 394 555 541 a. Using the 2k n rule, construct a frequency distribution b. Using the results from part a, calculate the relative fre- c. Using the results from part a, calculate the cumulative d. Construct a histogram for these data. for these data. quencies for each class. relative frequencies for each class.
math   Statistics-And-Probability   
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Answer #1

The data is:

586
498
739
507
190
505
621
457
359
509
601
555
613
578
354
428
499
323
493
369
517
612
593
519
552
511
384
530
538
524
449
726
196
556
509
281
559
566
496
660
450
580
672
412
515
576
690
412
428
795
439
626
571
553
409
382
493
522
252
394
571
607
508
515
599
555
449
701
535
374
362
541

(a), (b) & (c)

Data cumulative
lower upper midpoint width frequency percent      frequency percent
120 < 240 180 120 2   2.8   2   2.8  
240 < 360 300 120 5   6.9   7   9.7  
360 < 480 420 120 16   22.2   23   31.9  
480 < 600 540 120 36   50.0   59   81.9  
600 < 720 660 120 10   13.9   69   95.8  
720 < 840 780 120 3   4.2   72   100.0  
72   100.0  

(d) The histogram is:

Histogram Percent Data

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