1. ©G Dear 2008 – Not to be sold/Free to use
General Mathematics
Preliminary
Displaying
Data
Stem-and-
Leaf Plot
Stage 6 - Year 11
Press Ctrl-A
©G Dear 2008 – Not to be sold/Free to use

2. Displaying Data - Stem & Leaf
Key:
Stem 2
Leaf 5
= 25
Stem
Leaf 1 2 3 4 5

3. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 1 2 3 4 2 5

4. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 1 2 3 4 3 5

5. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 5 1 2 3 4 5 5

6. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 5 1 1 2 3 4 11 5

7. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 5 1 1 1 2 3 4 11 5

8. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 5 1 1 1 4 2 3 4 14 5

9. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 5 1 1 1 4 7 2 3 4 17 5

10. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 5 1 1 1 4 7 2 1 3 4 21 5

11. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 5 1 1 1 4 7 2 1 2 3 4 22 5

12. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 5 1 1 1 4 7 2 1 2 5 3 4 25 5

13. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 5 1 1 1 4 7 2 1 2 5 5 3 4 25 5

14. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 5 1 1 1 4 7 2 1 2 5 5 8 3 4 28 5

15. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 5 1 1 1 4 7 2 1 2 5 5 8 9 3 4 29 5

16. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 5 1 1 1 4 7 2 1 2 5 5 8 9 3 4 30 5

17. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 5 1 1 1 4 7 2 1 2 5 5 8 9 3 4 30 5

18. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 5 1 1 1 4 7 2 1 2 5 5 8 9 3 2 4 32 5

19. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 5 1 1 1 4 7 2 1 2 5 5 8 9 3 2 7 4 37 5

20. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 5 1 1 1 4 7 2 1 2 5 5 8 9 3 2 7 7 4 37 5

21. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 5 1 1 1 4 7 2 1 2 5 5 8 9 3 2 7 4 7 47 5

22. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 5 1 1 1 4 7 2 1 2 5 5 8 9 3 2 7 4 7 8 48 5

23. Displaying Data - Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 3 5 1 1 1 4 7 2 1 2 5 5 8 9 3 2 7 4 7 8 50 5

24. Displaying Data - *Stem & Leaf
Key: 5
04 2
59
= 25
Stem
Leaf 2 0* 1 1* 2 2 2*

25. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 0* 1 1* 2 2 2*

26. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 0* 1 1* 2 3 2*

27. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 0* 1 1* 2 3 2*

28. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 1 1* 2 4 2*

29. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 1 1* 2 5 2*

30. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 1 1* 2 6 2*

31. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 1 1* 2 6 2*

32. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 1 1* 2 7 2*

33. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 1 1* 2 7 2*

34. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 1 1* 2 7 2*

35. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1* 2 8 2*

36. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1* 2 10 2*

37. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1* 2 10 2*

38. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1* 2 11 2*

39. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1* 2 11 2*

40. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1 1* 2 11 2*

41. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1 2 1* 2 12 2*

42. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1 2 3 1* 2 13 2*

43. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1 2 3 3 1* 2 13 2*

44. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1 2 3 3 4 1* 2 14 2*

45. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1 2 3 3 4 1* 5 2 15 2*

46. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1 2 3 3 4 1* 5 6 2 16 2*

47. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1 2 3 3 4 1* 5 6 7 2 17 2*

48. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1 2 3 3 4 1* 5 6 7 7 2 17 2*

49. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1 2 3 3 4 1* 5 6 7 7 8 2 18 2*

50. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1 2 3 3 4 1* 5 6 7 7 8 8 2 18 2*

51. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1 2 3 3 4 1* 5 6 7 7 8 8 9 2 19 2*

52. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1 2 3 3 4 1* 5 6 7 7 8 8 9 2 2 22 2*

53. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1 2 3 3 4 1* 5 6 7 7 8 8 9 2 2 3 23 2*

54. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1 2 3 3 4 1* 5 6 7 7 8 8 9 2 2 3 3 23 2*

55. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1 2 3 3 4 1* 5 6 7 7 8 8 9 2 2 3 3 4 24 2*

56. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1 2 3 3 4 1* 5 6 7 7 8 8 9 2 2 3 3 4 25 2* 5

57. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1 2 3 3 4 1* 5 6 7 7 8 8 9 2 2 3 3 4 26 2* 5 6

58. Displaying Data - *Stem & Leaf
Key: 2 5
= 25
Stem
Leaf 2 2 3 3 4 0* 5 6 6 7 7 7 8 1 1 1 1 2 3 3 4 1* 5 6 7 7 8 8 9 2 2 3 3 4 26 2* 5 6

59. Stem & Leaf – Median/IRQ (1)
(Odd number of Scores)
Key: 2 5
= 25
Stem
Leaf 1 2 2 3
Q1=14
19 scores means that there are 9 scores above and below the median, the 10th score.
There are 9 scores above and below the median, therefore Q1=5th score and Q3=15th score. 3 4 5 6 1 1 1 4 7 7 8 9 10 11 2 1 2 5 5 8
IQR =
Q1 is the 5th score. 12 13 14 15 3 2 7
= 23
The median is the 10th score. 4 7 8 9
Q3=37
Q3 is the 15th score. 5

60. Stem & Leaf – Median/IQR (2)
(Even number of Scores)
Key: 2 5
= 25
Stem
Leaf 1 2 2 3
Q1=15 3 4 5 6 5 6 1 1 1 4 6
Q1 is the average of the 5th and 6th scores and Q3 is the average of the 15th and 16th scores.
20 scores means that there are 10 scores above and below the median, the average of the 10th and 11th scores.
Median =
25+27 2 7 8 9 10 11 10 11 12
Q1 =
14+16 2
Q3 =
33+37 2 2 1 2 5 5 7 9
IQR = 13 14 15 16 3 3 7
= 20
= 15
= 35
= 26 4 7 8 9
Q3=35 5