Stem plots of test 2 marks: Undergraduate students: 1 | 6 2 | 46 3 | 0569 4 | 28 5 | 2334599 6 | 2789 7 | 569 8 | 1348 9 | 9 Graduate students: 2 | 78 3 | 4 | 8 5 | 588 6 | 357 7 | 3 8 | 6 9 | 8 10 | 0