Hi,
Sorting the Data and listing frequency in classes of equal size (16)
470-486 3
487-503 9
504-520 8
521-537 2
538-554 3
555-571 2
572-588 2
589-605 1
472 480 482 486
490 490 490 491 491 498 498 499 501
506 508 509 510 512 514 515 520
523 533
559 562
576 577
593